How to Build a Reliable AR-47 (7.62x39 AR-15)

[@KLAYCO47]

This is a video the needed to be made. Thank you for putting it together.

[@ExtremelyAverageMan]

Klayco! Thanks man! Keep up the great work yourself!

[@jonathanrawls9992]

Have you had a chance to test the 75rd 7.62x39 drum designed for the AR platform? I love the idea, but I don't have confidence in the purchase yet. Given the current value of my dollar, the juice must be worth the squeeze. Thank you for your time and efforts sir.

[@ExtremelyAverageMan]

@@jonathanrawls9992 I have not. To be fair, I don't have much of a use for drums, aside from a range toy haha. No problem, hope you found it helpful!

[@SW-dg9us]

It's nice that you came out with this video. I made one in 2017 and "blew tub" dumped it. Anyway, I then covered all the shortcomings: mag failures to feed, lite strikes from short firing pins, extraction issues & stovepipes and breaking bolts/extractors. Your suggestions are what I did back then, as well as I use WMD NiBX coated 9310 bolts. With steel ammo, I've had great luck and currently over 4,000 rounds with no failure. Good job on your video. Just to mention you wrote 9130 steel BC, I think you meant 9310. Also, all my BCs are melonited as well..

[@chrismcleod9748]

Biggest problem I had was getting enough gas to the bolt, gas hole in barrel had to be opened up, extractors are a service item. C products are the most reliable mags, 28 rounders are the best. 5.56 firing pins are generally not reliable. Built 3 rifles, bought 2 (bca). Redex bolts are in my experience very well made.

[@ExtremelyAverageMan]

Wow! I never imagined that this video would get half the amount of attention that it's gotten, thank you! I made this as a helpful guide, since I was answering people's same questions on Reddit and Facebook with their builds. I'm really glad you guys are finding this helpful. Is there anything else you'd like me to cover or go over in more detail, or any additional videos I can make? Thanks all! -Average Man

[@technicaldifficulties2522]

One of the best walk throughs on yootoob. Do more...

[@411DL]

It's a kinda fascinating topic, really. Building one of these scratches a lot of educational itches when you try to get one working right. Also, contrary to some moderately popular KZbinrs like VSO Gun Channel and Hoplifeil, there's a lot of merit to owning one of these and a actually running it if you can fit one in your budget. 7.62x39 in an AR will teach you recoil management faster than 5.56 in a similar configured AR, especially if you have a Trijicon TA31 on it. It'll teach you drop and wind compensation at shorter available ranges. It's arguable 300BO will as well, but there's a whole host of arguments against that idea from a training perspective, but mostly cost per round. It'll teach you maintenance and expectation management, cuz if you think about it a lot of us will go through periods of life where we just can't get the range time we want so we need that compressed education.

[@MrTartarSauced]

As soon as you said H2 buffer I knew the rest of the review was legit. Great video. Also I think the other problem is when people go with a

[@biggeorge2964]

Great vid. So tired of schooling people.I do recommend flatwire buffer spring(seems to smooth action even more)I run laurue trigs on all my x39s.Thanks again

[@MrTartarSauced]

Your video is pinned to the top of a sub reddit AR47

[@85Sirex]

I bought a BCA 7.62x39 upper years ago when Obama wanted to ban M855 and 5.56 prices went crazy. I saved my 5.56 and decided to shoot some of my cheaper Russian steel case 7.62x39 ammo I stockpiled for my AK/SKS. I did end up having to replace my hammer spring with a heavier hammer spring and replacing the firing pin with an enhanced firing pin for mine to shoot Russian steel case more reliably. I still had issues igniting Golden Tiger, but I just save that for my AK and SKS. On my bolt, I replaced the bolt with a Young Manufacturing heavy duty bolt with heavy duty extractor. I also prefer the 20rd Duramags. So far it's been reliable enough for range use, and I wouldn't be afraid to use it for defense if I had to.

[@angrydragon4574]

Isn't it amazing how the anti-2A crowd get us to spend more money than we ever thought we should? I don't think the boomers were kidding when they said the best firearms salesmen are the very same people that want to ban them.

[@bored6839]

@85Sirex sound solid I’m trying to that on my first 762 build

[@BIGPAPPADICKB16A]

I also have a complete BCA 7.62x39 upper. Mine is rear charging for service ability over the side charging where you will have to carry hex wrench to remove the charging handle. I carry extra extractors in the grip. Lower is Anderson with Anderson lower parts kit. The only changes that I have made are Black Rifle Arms enhanced firing pin, H2 buffer, sprinco blue buffer spring, Strike Industries JCOMP Gen 2. That combo has worked great for me. I only shoot steel because for whatever reason, it jams with brass. At 100yrds I get 1.5inch groups with Academy Monarch HP and FMJ. And for magazines I use ASC, Dura mags, C mags, no issues out of any. I do have some spare bolts for when the stock one does break.

[@timothybooker2134]

Two companies you need for a reliable x39 AR: Young Manufacturing and Black Rifle Arms. Young Manufacturing makes a bolt specifically for the x39 cartridge along with an enhanced extractor. Black Rifle Arms makes the best x39 firing pen. They also make a great extractor as well.

[@ericm0612]

Nitride treatment is more brittle. Can make the surface chip on on corners. Phosphate is more reliable FOR BOLTS

[@angrydragon4574]

Phosphate will certainly last longer when firing but nitride is smoother and far more rust resistant while being a little more brittle than phosphate. Phosphate will last longer under firing while nitride will last longer when unused and it won't require as much lube to run as phosphate will.

[@perldog07]

Great useful content. Lazy old woods loafer here. My state has no magazine limits for big or small game. For tactically holding down a stump, boulder, or log with my tactical backside, I love the duramag ten rounders . If there is a chance of a sounder the twenty is my choice. Just too lazy to carry 27-30 rounds on the rifle. I rolled the dice and went with a trybe defense upper. Did not want to test my toddler like mechanical skills building an upper for this caliber. The 30/30 and 7.62x39 are time honored blue collar freezer fillers in Appalachia. Now it is becoming more approachable for us poors. This is a great video to deal with any issues and for tuning.

[@ExtremelyAverageMan]

Thanks so much! Agree with all of your points!

[@NoWr2Run]

@@ExtremelyAverageMan 100% BROTHER.

[@anthonymazzone6463]

I love that word... tactical. lol

[@davidpate2237]

On your Bear Creek arsenal there should be up v at the back of the upper you can take that out and put a charge handle back there if you wanted

[@p47rr]

I bought my first AR47 back in 2007. It was a Armalite. In their owners manual it said not to run steel case. Other wise it would void the warranty. So I all ways stuck with brass cased ammo. (I reload now.) I also make sure the gas system is working perfectly. The ejection is at three o’clock. Never broke a extractor or bolt. Built two more AR47 rifles and bought a BCA at Christmas. I use heat resistance blue loctite on the gas block set screws and handguard screws. The bolts for the handguard thread into the barrel nut. They can get pretty hot. And standard blue loctite is not a good choice. On one of my builds I used a cheap adjustable gas block. After two times out to the range. I could tell that the adjustment screws were seizing up from carbon. Read on another forum that a guy used aluminum based anti seize on his adjustment screws. After two thousand rounds they still move freely. (Anti seize is good up to 1600 degrees.)

[@billydanzz]

Best presentation video done on this subject I've seen over the years period. "I don't always hit that subscribe button, but when I do, it's for ARx39 how-to videos"..... Quoted from nobody...

[@ExtremelyAverageMan]

Haha thanks man! Really appreciate it, I'm glad this is helping people. I was certainly in the dark once!

[@InuYasha2022]

Awesome just ordered a bolt an extra extractor from sanders armory. Thank you. This Video needed to be made. Great information.

[@wyateerp1]

After around a year my AR47 runs well. Replaced my Firing Pin with an "Enhanced Bear Creek" in SS. So I have an extra. I only used Brass so not an issue. Will be purchasing Extra parts and things. My x39 is a standard rear and my 5.56 is my side charge. So backwards. But I'm going to be purchasing a different upper in x39. Thanks for the info. Great video. Will check my gas system and recheck my weight in my buffer on both builds. Not my first rodeo, but I only run around 3-5 hundred rounds a year as I can't afford it. I live on SS. Again thanks

[@Fenriz1222]

I have one of these and the only thing I had to do was get an enhanced firing pin. It runs flawlessly now

[@SuperMattfish]

Thank you for your efforts in making this excellent video. I have a Radical Arms AR-47 that runs reliably well now after incorporating many of your suggestions. And I've referred back to the video on many occasions.

[@tomjahn6896]

J&p hammer spring, excellent and made a regular mil spec hammer nearly as nice as an expensive timney. About 4 lb pull. Right to bear enhanced firing pin seems to be doing the trick with wolf steel case. The feed ramps, this is a big deal, don't over look it. Regular m4 are not the best for this. BCA runs basically an enhanced feed ramp vs the standard 5.56 m4. I run both Duramag and ASC mags. No issues

[@richardhaynes110]

Yes , well done , love the reader's digest version . Made it a quick study on the subject and answered questions i've had that have gone unanswered.

[@keepitsimple7402]

My daughter loves to shoot AR’s and I relish time spent with her. She shoots her husband’s, but wants to call one her own. Melts my heart. I ordered a Moriarti arms 16” kit 7.62x39 fourth of July sale (Go America!) watched this video four times and took detailed notes. (She wanted a rifle to have fun with, yet reliably harvest deer and hogs.) I then read every comment and took even more notes. As you stated, you wanted to present a detailed blueprint on how to get it right the FIRST TIME. Can’t wait to spend time building this WITH HER and am confident that this dad has the ability to do it right. THANK YOU MY MAN!!!!

[@ExtremelyAverageMan]

Thanks for the wonderful comment! Absolutely, now that you know what to look for, good luck on your journey and making memories at the range!

[@keepitsimple7402]

@@ExtremelyAverageMan love the way you think…

[@brianpulley8652]

I've built two 7.62.39 uppers and the only issue I had was on the one I tried a cassette style trigger and just had way to many light primer strikes...I just use mil spec style triggers and springs in nickel boron and I will use what I call a take up screw in my pistol grip screw hole to take the creep out of the trigger and I've found C- products and ASC mags work the best.

[@cspackler33]

Thorough. I've seen so many questions posted over the years and this answers pretty much everything. Mine are 1.Radical 16" carbine gas with A2 stock/rifle buffer, tubbs 308 flatwire spring, MBT2, lpvo 2.BCA 10.5 carbine gas with H2, damage ind cs carbine spring, Spikes battle trigger, cheap adjustable gas block, mini PA rds. They're basically both spare parts bin hobby guns but they have the components you covered and work. Definitely 20, 28 duramags.

[@416cubes4]

If you have light strikes, just bend the hammer spring on each leg a bit to firm it up for steel cased primers

[@Runandgun909]

Tips for a 7.5 build I have a bca upper as well came with a few issues that needed adjusting. H3 buffer and a adjustable gas block still ripped extractors found the bullets we not coming out smooth like a og ar15 so I honed chamber little at a time until bullets fell smooth out like ar15 without firing or bcg and then took the bca extractor because there “enhanced extractor” is to flat ramming it self into the steel case so I took a pen and put San paper around it put it at a angle nd took little off at a time till the bolt rode smooth over just by pushing it by hand. Now it runs steel like a champ. Compared to me taking it out and breaking in 40 rounds like it would.

[@LivingFreeInAWrangler]

I know this video is a year old, though I wanted to chime in with my experience. I have been building AR-47s since the barrels have been available. I have learned a lot and even used one in the rifle classes I taught. If you buy a Bear creek, don't get the side charger. Why? Because you want a entirely different BCG in it from black rifle arms. You can only replace the bolt when you go with the side charger. I actually had over 20k rounds on a BCA 7.62x39 upper with a full BRA bolt carrier in it. The Bear Creek extractor broke after 300 rounds and the bolt face blew at 650. They were very quick in replacing the part, but I decided to upgrade them instead. The enhanced firing pin BCA uses is still very brittle and they break anywhere from 10-200 rounds. At one point bear creek gave everyone 2-3 extra because of all the issues they had with them breaking. The bear creek barrel was excellent and the only reason I replaced it after 20+k rounds was because the rifling was almost gone. It would still hold 4-6 inch groups at 100 but I really got my money from it and it was time to replace it. At that time bear creek barrels were extremely cheap, I think it was like 55$ so I ordered another one. I didn't even ask them to replace it but I am sure they would have. Now the BCA barrels are 100$ or more and you could easily get a Faxxon from Right to bear for about the same price. The Right to bear branded stuff is either aero, bear creek, or ballistic advantage rebranded stuff. I find nothing wrong with buying a bear creek 7.63x39 but if you do, account for the added expense of the black rifle arms complete bolt carrier group with firing pin. With that added, you are equal to the price of a PSA with much better reliability because of the Black rifle arms upgrades.

[@peachfuds]

I upgrade all of my extractors to phosphate microbest extractors. The phosphate coating helps grab the brass and hang on until it leaves the ejection port. Slick surfaces like nitride or NiB are not ideal for extractor coatings because they have a tendency to slip.

[@ExtremelyAverageMan]

I appreciate the info!

[@SammyTheSidePiece]

​@@ExtremelyAverageMan have u heard of Cryptic Mystic coated BCGs?

[@SammyTheSidePiece]

​@@ExtremelyAverageMan also I wonder if the shortened AR10 chambered x39 BCG from CMMG would fit in my Radical AR47?

[@adamstevenson2485]

Thanks man this is the most I’ve learned about this particular build than in the last year. Very helpful.

[@dellontobin282]

Phenomenal video, I was having issues with my BCA upper/lower but you addressed all of my concerns. Definitely earned a sub.

[@blaksabbath9108]

I’ve been running x39 AR’s for a few years now with no issues, an 18” mid gas and 16” carbine gas. My setups have A5 buffer systems, adjustable gas blocks, and Young Manufacturing bolts. The A5 system is comparable to a rifle length buffer system which help slows the carrier which reduces wear on the bolt. The adjustable gas block helps fine tune the gas that cycles the carrier which also helps with wear. The most important is the Young Manufacturing 7.62x39 bolt. The bolt has a thicker wall and extractor than most/all x39 bolts on the market. Young Manufacturing was bought out by KE arms in 2021. They still sell the bolt but for whatever reason don’t have the description on the bolt specs on the website.

[@ExtremelyAverageMan]

That's good to hear about the Young Manufacturing Bolt, I caught wind of it soon after this video of course, after FocusTripp put out his vid on it too. Looks like a better option for longevity

[@blaksabbath9108]

@@ExtremelyAverageManI’ve had mine for quite a while now and it’s held up so far. Granted I haven’t put thousands of rounds through my rifles but with the hundreds I’ve put through I haven’t had any issues. I got my bolts before KE arms acquired Young Manufacturing in 2021. Seen a vid of a guy who had bolt carriers from before and after and the latter carrier was out of spec. Then they ended up sending him another out of spec carrier after he returned the first. So I’m not sure about the QC of Young Manufacturing at this time

[@angrydragon4574]

​@@blaksabbath9108Perhaps that's why the new management removed the bolt specs but that's just speculation on my part. Damn shame if that's the case though.

[@chadbenner6316]

I know I am a little late to the comment section here, but this video is outstanding. I wished it was around years ago when I was trying to figure out how to build a reliable “AR47.” I will tell you after building many of these rifles that my best experience with BCG’s has been with the Fail Zero nickel boron. They are pricey, but have proven to be the most reliable BCG I have ever used in this platform. I would consider them second to none in performance and reliability not to mention they are worth their weight in gold when it comes to the reduction in frustration that comes with extractors and firing pin failures. Thank you for the very informative video, it is very obvious that you have an exceptional level of experience with this platform as you massed your information exactly where the problems lie with the “AR47.”

[@TractorWrangler01]

Steel is pretty cheap. Like Red Army. But the Red Army primers are set pretty deep and require the inhanced firing pin. It will occasionally break a fireing pin too. Anyone else have this issue?

[@darkstorm989]

Just found this. You did a lot with some scrap cardboard. Best part was the brand recommendations for specific parts. Thanks for the video and ill definitely buy the upgrades if I have issues or run a ton of rounds through my rifle.

[@jasonmoses6207]

LOVE the garage floor diagram! Very helpful video, even though I'm planning a PSA build

[@lyflonglearner]

Bro! Your video was EXCELLENT!!! Quite possibly the most clear, concise, honest, thurough and organized presentation i have ever seen on any topic. I had no idea i needed a 7.62x39 upper, but, after watching your video, it not only makes logical sense (ammo cost, 30 caliber option) to build one, but i don't have any apprehension as to where to start or what to do! You have simply removed any fear or hesitation that i would ordinarily have if someone told me i should go and do something i've never done before. You seem to have a gift for teaching and communicating with unusual clarity. Thank you!

[@wyateerp1]

Just finished my build,. So far only 100 rounds thru it, but it ran Flawless. One hiccup was a Failure to feed. That was a Magazine problem. ASC 5 ends. {I still use them, Its all I have now} Rectified that. Love it !. Much better than the Half dozen 5.56 and .300 Blk out's I've built. But I will buy a 5.56 upper to play with. Why not ,right? Anyhow, Navy "75-81". Thanks for the Video. Big info

[@remiel3315]

can confirm about the duramag, have a pair of 10 rounders, accidently ran one through the washer & dryer, still works even with a minor ding to the feed lip and some loss of the paint

[@remiel3315]

I also have the KAK "enhanced" BCG the first was a Stoner and it ate itself, but about 100rds in with flip up irons im ejecting about 2:30 to 4:30, but i need more time on it

[@KelzCasa]

You can totally change the name of this video to ‘The Comprehensive AR-47 Guide’. Extremely above average video, and thanks so much for taking the time to make this.

[@ExtremelyAverageMan]

Thanks man! What a compliment!

[@SammyTheSidePiece]

I highly recommend using brass case ammo only! And going with an adjustable gas block for the longevity of the BCG.

[@mrrustygray]

My ASC magazines run great. I also have some C Prods. I under load by a round or two. I run a PSA upper, on an Anderson Lower, and have run it over and over and have zero issues. I did buy extras, as I do that for all weapons. Things break. Even Danny Defenders break.

[@geraldalsup560]

I have a radical firearms 16in, I use an H3 buffer with an enhanced firing pin. Also installed a muzzle break with a screw on blast forwarding device for when I'm at the range. Use C products mags. Mine runs as good as a 556 and is a heavy hitter.

[@Jonno2summit]

I love my AR-47! Built on an 80% lower and a Stoner complete upper from Midway for about $700 including buffer system and furniture. I use ASC sheet metal mags for the fatter cartridge. I had a couple FF jams at first, but then I polished the feed ramp with a dremel tool and it's been flawless ever since. I think I sanded down the feed pedals on the mags to make them smoother too.

[@Seaci2012Mar21]

One thing I noticed building these uppers is that some barrel manufactures will sell you a 7.62x39 chambered barrel with 223 extension ramps not 30 cal ramps. BCA at least has 30 cal feed ramps on the barrel extension. Not sure if this was covered in the video

[@ddm8438]

You defiantly have a new subscriber. Great video with great information.I made the Switch over to 7.62x39 a year ago and got all the kinks worked out. You definitely have to do your research before switching over and building a AR-47 platform. It can be a pain at first, but once you get it fine tune it runs smooth as butter. Belom brass is the way to go. I've drop plenty of hogs with those rounds.

[@ExtremelyAverageMan]

Thanks bud! Yeah, I feel it's that much more rewarding once you go through the trial by fire and get your gun running smoothly. Makes you appreciate the rifle more!

[@ngaoutdoors4157]

Awesome video just subbed! I have narrowed down my x39 barrels to diamondback firearms with zero issues running steel and all BCG’s are BRA period! I have not run Faxon but do have some of there bolts as the specs on them are impressive, superlative arms adjustable Gasblocks ar 100% and if you run suppressed it’s the key to keep it running smooth. For subsonic loads 196 brown bear you have to enlarge gas port to 2.80mm with h2 buffer has been 100% for me consistently. If the gun will mot run reliably on steel case then I would find the problem and change it out just saying, I own the new sig LT and Pws x39 guns which are hands down 100% but enjoy my home build x39 uppers and have now got the years of trial and error down to a reliable platform! I encourage anyone that wants a x39 AR platform to spend that extra $$ to begin with so they don’t get disappointed first thing. One of my PWS guns has over 7,000 +\- rounds and only been cleaned twice, sig is still getting rounds but be awhile before that round count get there.

[@ExtremelyAverageMan]

Thanks man! Yeah I'm trying to help people here by getting them to run good initially...although I wouldn't have learned half as much if I didn't have issues along the way haha. Yeah I need to narrow steel issue down. At the time I was getting stuck cases with Tula, but I do have some lacquered steel at the moment...maybe I'll give it a go next range trip. Thanks for the sub and for watching!

[@chriscosby2459]

Great video, I learned a lot about the areas to improve the reliability with the 7.62x39. I love that round.

[@ArmyMatt79]

Great Video!!! I built my AR-47 years ago, and it's never jammed, and it's really accurate. I use Duramag ( C Products) Mags. It's one of my favorite Firearms to shoot.

[@ExtremelyAverageMan]

Same. I've always loved the x39 round. Coupling that with the manual of arms and the ergonomics of the AR platform is so satisfying.. Thanks for watching!

[@CatDaddySteve]

Me too , my 10 year old AR 47 is 100% reliable..... cheers

[@waterboy239]

Any gas adjustment

[@joetorres3120]

That's all good and dandy FOR BRASS AMMO, but if you're shooting steel cased ammo, you're going to need an enhanced hammer spring to go with the enhanced firing pin to eliminate those light primer strikes. I was getting 5 to 6 light primer strikes for every 30 rounds fired. I got the "Wolff AR-15 Extra Hammer Spring WS-30093". My AR-47 goes "bang" every time now! Also, don't buy the enhanced firing pin from Bear Creek Arsenal, it is crap (several other comments say the same thing about it). Mine broke on the very first shot. Lucky for me the manager at Range USA let me go home and get my extra enhanced firing pin from Windham Weaponry so I could come back and continue shooting. With both my enhanced firing pin and the enhanced hammer spring it eliminated the light primer strikes. I shot my AR-47 70 times that day to test and it worked. Have not had any trouble since.

[@ExtremelyAverageMan]

Currently optimizing my AR's for steel. Last range trip I shot 80 rounds of lacquered steel and had 2 failure to feeds. I've since polished my feed ramps with Flitz, hoping that resolves the issue. Thanks for watching!

[@dlbracer56]

CCMG lower (multi caliber) Bear Creek Arsenal 7.62x39 right side charger upper,16 inch Heavy barrel 1:10. Bear Creek BCG needed Black Rifle Company "enhanced" firing pin ( Light strikes on steel cased ammo. the BCA one came bent and broke during dry fire training), Black Rifle Company "enhanced" heavier Hammer Spring, H2 buffer made a NICE 2 MOA group shooter.

[@jmephisto1992]

Main issue I had with mine were feeding issues at the ramp, a bunch of stovepipe, log jams etc or shell completely stuck. Refit my gas block and smoothed out/ widened feed ramp. It works like a machine now, my favorite gun to shoot and cheap ammo. And yes it is a heavy Barrel! But very accurate

[@timsmith6479]

Great Video I enjoyed it. I was impressed with accuracy of 7.62x39 out of an AR. There are adjustable buffer weight kits for about the same cost of a buffer weight. I ended up going with a fixed A1 stock, recoil is much smoother. I need to check out an adjustable gas block.

[@alijankhan3330]

The Yemenis were also impressed with the accuracy of their Colt 7.62 × 39 ARs. So much so that they called them Allah rifles.

[@jonathanhornbuilders]

I just put an enhanced firing pin and extra heavy hammer spring in mine. Running steel case ammo like a champ now!

[@spencerbookman2523]

An extended firing pin didn't work so well in my M&P-15R upper chambered in 5.45x39. The upper came with a heavy hammer spring. However, I didn't want to be stuck with a mil-spec trigger and heavy hammer spring, so I experimented with an extended firing pin. Nothing was near as reliable as the heavy spring. I think my upper prefers polymer coated steal cased ammo. I was getting approximately one feeding issue per magazine with the lacquer coated ammo.

[@ExtremelyAverageMan]

Every build is different/experiences different tweaking. Currently getting mine to run good on lacquered steel cased. Thanks for watching!

[@danielwatkins5146]

Awesome video man! Love the cardboard diagram. The AR-47 gets a lot of hate but I love mine! I think mag choice is probably the biggest factor. Duramag for the win.

[@jbp3430]

ASC is better

[@LuisRodriguez-ny2qb]

​@@jbp3430 im getting ak soon which mag is better fr fr ??

[@adamstevenson2485]

Yes Durama is it believe me I literally have bought them all.

[@Gary-kc9hx]

​@@jbp3430u crazy!😊

[@mrarivv0007]

​@@LuisRodriguez-ny2qb duramag. They're the best ones, great quality.

[@270eman]

I just bought a $400 Radical firearms 7.62x39 ar15. I just ordered some backup extractors.

[@justindurand9110]

Great video on this topic. Took some trial and error to get 762 running smooth, but I love it and think all enthusiasts should consider building one.

[@ExtremelyAverageMan]

Yup, a bit of trial and error to get these builds to run reliably...but that's part of the fun haha

[@nonsquid]

Two more things to talk about regarding AR-47s. 1>Taking out the firing pin and chucking it up in a drill to face off the end travel with a metal file for light strikes. 2>Marking your AR look alike with a visible ranger band so you don't accidentally put an AR-15 magazine into you AR-47 rifle.

[@JohnnyBGoode215]

Surplus Ammo has a great selection of spare bolts and parts. Great prices.

[@innercityprepper]

I have made two AR47 builds as well, and I've gone perhaps a little overboard on them both, guts-wise. First, a BCA side-charge upper receiver holding onto a 16" Faxon mid-length gunner barrel, adjustable gas block, and Kaw Valley 5.4oz (H3) buffer. Second build is based on a standard top-charging upper with a KAK bolt, KAK 16" carbine length nitride barrel, but I had a bunch of spare parts lying around so I used an Adams micro piston for the operating system. Also using a Kaw Valley 5.4oz tungsten. Both builds use the BCA enhanced pin and Witt Machine SME muzzle device. I was worried at first that cheap 7.62 wouldn't work with higher end drop-in triggers but... they do! So I've got a CMC drop-in on both of em. I got a bunch of extra extractors just to be sure, but they are actually so much fun to shoot that I've started buying Sellier & Bellot FMJ brass rounds in bulk. They're not cheap, but they ARE fun enough to make it worth it!

[@joesinegal8167]

I Also Added A Wolff Extra Power Hammer Spring From Brownells To Mine Many Years Ago And My Build Has Run Flawlessly To Date! You Can Also Install A Competition Muzzle Break To Control The recoil With A Standard Buffer Spring! I've Built Quit A Few AR-47's Over The Years For Myself, Friends And Family Members & Everyone Of Them Are Still Running Flawlessly After Many Years Of Continuous Use! Thanks For The Video!

[@berns_pratt]

Awesome video, Average Man! I don't have an AR-47 nor do I plan to in the short term, but this is an excellent video on how to make it reliable. And I love the cardboard diagramming!

[@ExtremelyAverageMan]

Haha thanks! I figured it would make for a good way to organize all of that information.

[@marcosherrera675]

I just picked up a right to bear 762x39 complete bolt carrier group for 99$ this week. Long story short. I had an extra lower I wasn't using. Last weekend I went to my local gun store and I found a complete 762x39 upper assembly with charging handle. So I paid 250$ for it and ordered that bolt carrier group from RTBA . I put everything together last night and I plan on going to the range tomorrow morning. The lower I'm running is palmetto state. The upper is a brand I'm not familiar with. Hopefully all goes well. I enjoyed your video

[@NoWr2Run]

WELL ?

[@ExtremelyAverageMan]

Thanks! How'd it do?

[@Irish_Hooligan]

Just built one myself. I am running a palmetto arms Milspec lower, Milspec springs etc. etc. BCA upper Gen2 charge handle (these came with the enhanced firing pin). I got their upper with the hammer forged barrel($280). Really like the lifetime warranty. Ironically, I am also running a primary arms LPVO, I got it for 170 brand new since they were running a deal. Duramag 28 round mags (to fit in my Molle magazine pouches ony my vest.)

[@ExtremelyAverageMan]

Nice!

[@MrRiorust]

Wow.... spoken like an average guy! Sub'd. I built my first AR-47 about 8 years ago and have run into most of the common "issues". I solved my issues with a credit card, a lot of range time, and a lot of part swapping. It really does boil down to the 4 points you highlighted. PS, I have a couple of "Right To Bear" barrels, I find them to be pretty darn good for the price, they ship quickly and have been great to deal with.

[@ExtremelyAverageMan]

Awesome, thank you!

[@tomjones942]

I am a beginner with all this but I totally understand everything you talked about . Super informative , very helpful . Thank you !

[@ExtremelyAverageMan]

No problem bud, I was fresh at it on the first build too! Glad I could help and good luck!

[@randyfrantz7195]

I agree with many if not most of your recommendations. One thing I recommend for over gas issues is to start with the adjustable gas block then go to increasing buffer weight as needed. It is best to limit the amount of gas going into the BCG to avoid excess fouling and gas in your face. My rifle still has the carbine buffer and ejects where it should after adjusting the gas block. But I may try a heavier buffer just to see if there is something I am missing! Thanks for the video.

[@wilfriedvomacka1783]

Extremely Average Man, but Extremely High-end Information. I just ordered my first 7.62x39 AR and your video answered me like thousand question! Absolutely stellar! Thank you!!!

[@ExtremelyAverageMan]

You're welcome my friend!

[@pyaeger911]

I got. 16” CHF BCA upper on a PSA lower. I had a white spring in it with a H2 buffer. The recoil sucked. I upgraded to a blue spring with an H3 buffer. It shoots great now. Way less recoil. I just received an aero precision adjustable gas black. As soon as the gas tube and roll pin gets here. It’s going to be even better. I only run brass btw.

[@Jobs58911]

i have 5000ish rounds on my 762x39 kak/bca build never had any issues, also i only shoot steel case.

[@mynameisnobody5462]

I picked up some AR mags and some pro mags because it's all I could find at this time . I did notice they are anti tilt followers, I hope they work . But C products seem to be the go to.

[@casbah2100]

Thanks for your helpful information. This will definitely improve our experiences in this important platform.

[@colinmiller4598]

With a couple of Faxon barrels, I had to open up the gas port a few sizes. Another time, a Bear Creek Arsenal enhanced firing pin had an uneven finish that kept the pin from floatly freely.

[@ExtremelyAverageMan]

Was it an easy install/adjustment going to a mid-length gas system? I'd like to make a video on installing the gunner barrel later this year, however I don't know how that will fair with KZbin's new egregious guidelines.

[@SleeplessInFl]

Right to bear is a good company. I have bought a lot of stuff but they never had any complaints

[@ExtremelyAverageMan]

Good to know!

[@georgewashington7312]

I'm seeing alot of these builds going past the 5k mark as far as round count before failure, I think that pretty darn good.

[@blustripes4ever844]

KAK makes a buffer with different weights that you can change out. I have one on my 300 blackout. That's how I got it to run subsonic.

[@kennethmobley8441]

I wanna thank you for this video I’ve built a whole ar47pistol and it shoots flawlessly thank you again and keep up the good work

[@NightDivision1]

Hey I appreciate your video man! I've been looking into this type of rifle to prepare for hunting next year and this video has ALL the information I needed, keep doing what you do 💯

[@douglasstandal3856]

EAM, I will recommend Wyndham Arms Enhanced Firing Pin (A Premier Manufacturer!) Longest ones and clearly best made ones that I have purchased, Light strikes are a problem with the amount of strike, or really length on your steel ammo being your reason of F.T.Fire! And this actual is the reason we buy these enhanced pins! Also Wyndham pins don't break like those from your rifle company! I tried the stuff from BCA, and it's basically junk, or everything I have seen is very poorly machined and prone to fail! I did the math on this, and your hammer strike isn't usually the major problem. It is how much protrusion past the bolt face!!! I now get 100% reliability with Steel cases, or my brass, or reloads now! Another buffer you can try is a JPS Silent Buffer system! Way more money of course But love the lack of spring noises from the stock!

[@ExtremelyAverageMan]

Thanks for the info!

[@NoWr2Run]

@@ExtremelyAverageMan YA, BCA IS JUNK, LMFAO.

[@bogusphone8000]

For my AR-47s the key was an H2 buffer and Sprinco Hot White spring. Smoothed the operation right out. Steel issues are almost always cheap barrels. Had a number of feed and extraction issues early on. Cleaned and oiled rigorously and after 100 rounds it smoothed out and runs great. When I rebuilt with a Diamondback barrel, no issues with any rounds from day one.

[@antonyilla4929]

I've ordered from right ro bear. No issues rapid shipping.

[@ExtremelyAverageMan]

Thanks man! Others have backed them as well. I'll be checking them out!

[@cedricsmith9209]

Very good video. This will definitely help me with my next build.

[@ExtremelyAverageMan]

Thank you and good luck with the build!

[@levay8224]

Got a m&p sport 2 and wanted to bump up calibers so I went ahead and ordered a BCA upper and so far and been a joy to run and duramags are go to

[@zuriel1489]

excellent! thanks . Just starting my 7.62x39 build. Very helpful

[@actionjksn]

If I didn't have a Norinco mak-90 I would totally do an upper in this caliber. I got that rifle in 1999 for a cheap price plus I got a bunch of $2 a box Wolf Ammo much of which I still have. I do have a Grendel that I made and it has the same diameter and shape case as 7.62X39. I've made it as a precision rifle so I don't think it's going to have a super long round count anyway. This would make a cool opportunity for someone who doesn't have an AK. The round is really quite excellent and a very good penetrator. It will go right through a cinder block and break it in two easy. One thing I like about my AK is that it doesn't just accept steel case ammo, it is actually better to shoot steel case through your AK. I don't know how they were able to take the AK and make it where it performs better with steel case than brass. I would not have this AR upper if it can't comfortably handle steel case. This is a major part the 7.62X39 world. Might as well do 300 Blackout if you can't handle steelcase in 7.62X39..

[@ExtremelyAverageMan]

Currently resolving this. I ran 80 rounds of lacquered steel through last range trip and had 2 failure to feeds, but otherwise ran fine. I've since polished my feed ramps with Flitz, hoping it resolves the issue. Thanks for sharing!

[@actionjksn]

@@ExtremelyAverageMan I would try some more steel case and see if it has worked itself out. Or maybe there's an improved extractor available.

[@sarge12212]

Thank you for making this video. I've been through most of these issues and have done these upgrades already. But it's good to have a tutorial for the newbie's. I keep a complete entranced BCG on hand when I shoot my AR47. If I break an extractor, I can just slap in the other BCG and replace the broken extractor at home. The adjustable gas block was my last upgrade.

[@ExtremelyAverageMan]

Awesome, glad I could help! Yep, we've all been there and these builds are surely trial and error. That's probably the best resolution at the range-a broken extractor is easy to replace in 5 minutes, but even easier is to just pop in your "on deck" bolt carrier group and just replace the extractor at home while you keep chugging away at the range!

[@sarge12212]

😎

[@rgt5727]

I just want to say that your video is one of the most, if not the most, well presented and informative videos on this subject. I watched it a few day’s prior to my bca side charging upper came in. The only thing I did to mine before firing was replace the bca enhanced firing pin with one from black rifle arms and a vortex crossfire ii 3-9x40. I did not add the wolff xp spring although I had bought one. Anyway, using c-products duramags I fired 120 rounds so far, 80 of which were steel cased including tulamo fmj, wolf hp and zsr ap fmj, which are Turkish. The brass cased rounds were s&b psp. All worked without issue.

[@ExtremelyAverageMan]

Awesome, thanks for watching! Yeah the BCA firing pins are know to fail early, even if they state that they're "enhanced".

[@rgt5727]

@@ExtremelyAverageMan So... I've a question if you don't mind (BCA 16" right side charging upper on an anderson lower). This past weekend I shot some more and after never having a problem, as my round count was almost 200, I had a failure to completely eject causing a jam. It messed the neck up on the fired casing but was easy to clear. I fired a couple of more rounds and then the same thing happened. I was using my 20 round duramag firing the cheap turkish steel cased rounds mentioned previously. So I wrote it off to bad rounds and I cleaned the gun, including removing the bolt and firing pin and looking at the ejector, which looks fine. Today, I had a chance to shoot so I loaded up my 10 round duramag with belom brass (I shot a couple of boxes of these last weekend with no issues). After the 3rd or 4th round it failed to properly eject causing the same jam and case damage as before. The only other piece of info I can add is that my brass is landing at about 1 o'clockish. I made a note to order the bcm extractor spring upgrade kit you mentioned in the video. I do have a spare Right to Bear extractor I'd bought to keep on hand but the one in there looks fine. Any other thoughts? Can it being over gassed cause the problem I'm describing? Thanks

[@rgt5727]

I replaced the bear creek arsenal bolt with a black rifle arms bolt. It seems to run fine again. Oddly I was going to replace the spring in the stock bolt and the pin refuses to come out… After getting it sorted I added the aero precision low profile adjustable gas block and an h2 buffer weight.

[@jimrasnick9326]

I just picked up a ar47 and was looking for some good information on it. I hit the jackpot here, great video well done!! New sub here.

[@oaklavegas8779]

Great video! I’ve had a 16, 10.5, & 7.5 from BCA. Only have the 16 now. The pistols were unreliable. It started as a Gen 1 side charger and I could not stand that little screw. It kept coming loose. I’ve changed it to a rear charging receiver to rid my self of the headache. It’s funny, I’ve never had issues with ejection. Although I did make a few changes before I even shot it. I swapped the buffer to H2 and have had the heavier trigger spring and enhanced firing pin. So I guess those changes made all the difference. Along with C products mags, I think that info was out there but I definitely had to look everywhere for them. You have them here all in one place. Wish I had this video when I first started. Great video.

[@ExtremelyAverageMan]

No problem! I had to do the same as well, a LOT of reading through forums and various random videos and reddit threads to try and find good advice/answers/remedies to the issues we encounter. My intention was to put it all in one place for people, so thank you very much! Yup, sounded like you did very good on your AR-47 solutions. I have the gen 2 side charge on both of those builds you see which mitigated that charging handle bolt coming loose (blue loctite not needed thankfully!)

[@Poe-Arms]

Thank you for this video. I went with the Radical Firearms AR-15 chambered in 7.62x39 and I know that I have to upgrade parts and this video gives me great insight 👍🏽

[@ExtremelyAverageMan]

Since I've made this video, I've only heard great things about Radical Firearms, sounds like a great choice! Give us a status update after a bit of time with it!

[@Poe-Arms]

@@ExtremelyAverageMan Will do! Thanks

[@raviiyer7354]

Great video thanks for posting. FYI I have only a few hundred brass rounds through my BCA 7.62x39 upper w/ a 16" heavy barrel upper and my stock M&P15 lower and ASC 10 round mags (California). So far no trouble with feeding, ejecting or soft strikes (And now BCA also offers the "Enhanced" firing pin w/ all new uppers).

[@ExtremelyAverageMan]

They do, although mine broke after a couple hundred rounds, and others have had bad luck as well. I'd go with a more reputable brand such as BRA once the inevitable happens. Someone mentioned a titanium firing pin as well (Anarchy Outdoors) which for $25 gets you a lifetime replacement guarantee. Pretty awesome!

[@alijankhan3330]

Iirc the reason Colt was able to make a reliable AR pattern rifle in 7.62 * 39 was because they based their 7.62 × 39 AR on an AR-10. Since the AR-10 was designed to fire .308/7.62 NATO, it had no problem handling a weaker cartridge like the 7.62 × 39. The reason other manufacturers had issues making their 7.62 × 39 ARs run reliably is because they based it on the AR-15 which fires .223/5.56 NATO and was not designed to fire a more powerful cartridge.

[@mikecarter5931]

Feed ramps is a big thing. Unless your are buying a completely pre-built upper. If your are building your upper from the ground upper your going to have to smooth the feedramps. Especially the spot where the barrel and receiver meet.

[@411DL]

I'm working on my own video to document my foray into 7.62x39 builds. One thing I've learned can have a dramatic impact on bolt longevity is the overkill demolition of the six-o-clock lug in the extension to create one big feed ramp. Sanders Armory 16" barrel. Came this way. Snapped a lug on my first bolt at around 950 rounds. From the perspective of from behind the bolt and into the barrel it was the lug next to the extractor closest three-o-clock. Replaced bolt, then at around 300 rounds (all Belom) I NO-GO gauged it and found it was positive headspace. Looking at the bolt the same position lug was bent noticeable inward. Changed bolt again. Now, only 4 rounds in, what's left of the two lugs next to the absent six-o-clock lug look like they're peeling back and catching the brass and bending the cartridge at the neck. I consider my Sanders barrel now scuttled because of this. My 18inch KAK w/ Midlength gas system... runs like a champ out of the box. Not a heavy barrel but groups certainly well enough. Even works with ASC mags and yet the feed ramps look very normal. Not necessarily 5.56 M4 ramps but, tastefully adjusted and not butchered. Oh and I did not notice the oddity that is my sanders barrel extension until I bought and looked at the KAK barrel, then it all made sense. I read some adjust their feed ramps but never thought to this extent. My 16" Radical upper (impulse buy at a serious discount). This thing is an all-round problem child. Belom and also Sellier and Bellot bullets are literally too fat at the ogive to fit cuz I think they machined the throat on the barrel too short. I verified that I can slip a spent Belom brass into the chamber and it drops in farther than a new cartridge will. Barnaul runs fine but Barnaul is hard on ARs not just because of the steel case but they're one of the consistently hotter rounds out there and you really feel it. I reserve my Barnaul for my PTR; that thing eats it up.

[@SammyTheSidePiece]

Where did u get your Radical AR47 from? And how long have u had it or how old is it?

[@411DL]

@@SammyTheSidePiece Primary Arms end of December, 2022. Was on sale for $229.99 then I also had a %12 off coupon and got it down to $203. Got a Primary Arms optic same order, took off the shipping so it was impossible to pass on. Just really wanted to try it out, see if it was worth the hype.

[@SammyTheSidePiece]

@@411DL yea man we got a Radical x39 from classic firearms a couple of weeks ago, on sale for 440$ and It looks and feels really nice. So far we got a Tubbs flat wire spring to reduce harmonic vibration and be forgiven on the BCG. The next upgrade is gonna be an adjustable gas block because I need as reliable as possible. I was asking when u got yours because I'm thinking when Radical first started making them maybe that was the trial and error period then after making them for some time, they made them better. Hopefully anyways lol

[@411DL]

@@SammyTheSidePiece I should note that my upper did not come with a BCG or charge handle. Did you get a full rifle somewhere?

[@SammyTheSidePiece]

@@411DL oohh, yea we got the whole rifle man. Classic firearms is definitely the place to shop because they have really good quality stuff and the offer a lifetime warranty for a few more dollars at check out.

[@182QKFTW]

28rd Duramags are built to fit into standard 30rd AR/M mag pouches

[@mauserdave]

Olympic Arms made a pretty good production one. Called the Sporter 7.62 or something like that. Not even sure if they are still in business.

[@dav762s]

RTB is a good company. Have had good luck with the bolts from them for the x39.

[@tylervoit9447]

Any idea on bolt life?

[@scottminshall6420]

Just stumbled across this video, I must say it was very informative, and I like your presentation with the cardboard that gave me a laugh, but it does help those who do want to screen shot your information. Now lets talk about the Mauser behind you in the first part of the video, looks like a scout rifle set up. Thanks again and happy shooting.

[@brucec2635]

WOW. Am just about to build my first lower and then figure out my 7.62x39 upper stuff. Great help. Thanks!!!

[@billjensen6216]

Those magazines also work for the 6.5 grendel and the 6 mm ARC as well as the 7.62x39 great video and information.

[@ExtremelyAverageMan]

Thanks for watching!

[@IronGunner10]

New sub! Glad youtube was using my phone to listen to me talk to my friends about my next build! 😅 great content, Thanks

[@TTULangGenius]

Just got me a barreled (no BCG and charging handle, for those who don't know) 7.62 x 39 upper by Radical Firearms and gonna build on top of an Aero Precision lower. This video is a godsend because I haven't bought a lot of the major parts yet. This is gonna save me a lot of trouble and money! I appreciate the info and I learned about how to tell if a rifle is overgassed or not! (Seriously, I was just shopping and doing research when this video randomly popped up in my feed!) Thank you!

[@ExtremelyAverageMan]

Glad I could help and enjoy! Let us know if you need any help! If you have reddit, r/AR47 is a helpful place too.

[@TTULangGenius]

@@ExtremelyAverageMan Appreciate the offer and I might just need the help! I have built an AR15 in the past; a really nice CMMG Resolute in 5.7 x 28 in Flat Dark Earth (it looks sexy with an FDE stock and grip with a black lower and buffer tube [the lines are gorgeous]). It's a sweet little shooter with no recoil at all. Time to add to my rifle building repertoire!

[@GrumpyGenXGramps]

Don't need the BCG for this build, just a new bolt. Save u a lot of moolah

[@CatDaddySteve]

Make sure You're feed ramps are polished smooth... You're hammer spring is heavy for steel case Russian primers, and You're running an enhanced firing pin 😉

[@billjensen6216]

BCA does have heavy fluted barrel's for most calibers. Still a heavy barrel but lighter do to the flutes.

[@lvrrylxrd232]

This was a very well put together video and tons of information for gas system and adjusting properly, thank you

[@jimmyofthesea1883]

Right to bear... I've got a couple of 80%'s from them, not much to go wrong with an 80% but I haven't had any issues with them. I run a Bear Creek 7.62 upper.