Young Manufacturing BCG Examinations (1 Physical/ 1 Autopsy)

Young Manufacturing BCG Examinations:
1 was a physical because it passed.
1 was an autopy because the Carrier Key Screws were loose.

[@justsnuggle]

I would love to see your recommended parts list for replacement parts and what you think about bolt carrier coatings.

[@enb3810]

He did, recently. Check his page

[@mayhemgarage9672]

​@@enb3810where?

[@thatrealba]

"Don't do this at home." Yeah, cause I have a bench full of gauges at home like that. 😅

[@HB-kp6rl]

Call brownells and start collecting. Can’t hurt, right?

[@jcarne1015]

I recently installed the most expensive BCG I’ve ever bought for a personal upper. Hand cycling revealed unusual resistance going in and out of battery. I tried a much less expensive BCG, no problem. I borescoped the interior of the carrier, and found not only significant tool marks in the gas ring bore, but significant burrs inside the gas relief ports. It’s going back to the manufacturer.

[@wyattjones7483]

It's like Déjà vu all over again! I can say without a doubt my two Young Manufacturing BCGs have run flawlessly after the SOTAR treatment.

[@jdecar1]

How does one go about having SOTAR Chad examine a bcg? I can't find it on the website or fb. What's that cost, anyway?

[@BrassAngels]

Thanks to Ms. Donna for the stellar camera work! Thanks also to Chad for putti g this jazz o line for those of us, 2A supporters, to learn from the best!

[@southernviking3113]

Off topic of the video but whenever I’m cleaning one of my ARs or building one, swapping parts or whatever I’m doing I love to just hit play on the playlist and listen while I’m working. I’m not listening to videos regarding the work I’m doing, I just like to listen to Chad while I’m working on my rifles.

[@kenneththynes4761]

These videos are outstanding. I have multiple armorer certs from Glock, LWRC, HK, and FN, but these are incredibly informative and cover minutiae that I'd never received on the AR. And yes the camera work is really good.

[@ltgoogle3730]

So I read YM statement on screw staking... it doesn't actually say why they don't stake. It just says we don't do it, here's what mil-spec calls for, and here's what we. Should you stake it, we won't warranty it. None of that really answers the question of why they don't do it though

[@vg1701]

The don't stake cause it's easy to do improperly. So instead they have a key built into the gas key that fits a special recess in the carrier. That lines the parts up correctly and carries the loads of the gas key and gas tube slamming together. Then the actual screws are loctited in place

[@willo7734]

You mentioned it in the video but I’ll repeat it. Your wife is a really good camera operator. Great views on all of the details.

[@SchooloftheAmericanRifle]

Thank you. In my opinion she is the star of the show. My videos were terrible till she stepped in.

[@jonwick4628]

Thank you for the great content. Very informative. Best format on KZbin.

[@TheWinterfan]

Love Love Love these types of vids. Please keep em coming and thank you for making them.

[@joshr2280]

These vids are so satisfying for some reason. Wish he d have a page that ranks all the bcg s . He should almost buy which ones he thinks best then put the parts on it he likes , then sell them. People always will pay for the best

[@209brandonb]

The problem is the best that day might be the worst the next batch these are just that particular one. Watch the vids when he does like 5 of the same manufacturer and they all gauge different. Just get a colt bcg and know ur good. They don’t look fancy with DLC or TN coatings but they are not gonna fail on ya and always gauge good! He gauged 3 from almost 30 yr apart and still gauged good.

[@DerWaidmann_]

He always says it's a sample size of one and just because one sample is bad or good doesn't mean every copy will be that way

[@donjohnson5172]

Blindly buyin stuff just because “Colt” can get you into just as much trouble. Tons of Colt stuff out there that’s out of spec and junk. Hell, they hardly make ANYTHING in house anymore.

[@Tom-qx5nl]

Another excellent video! No issue with audio. Thank You so much for sharing your knowledge, it is most appreciated.

[@ThePatriotParadox]

Absolutely love this video, a lot more in depth into the gun smithing/machining side. Love to know how everything coexists together and how everything is made, also what it's made of (for best performance) I so wish I could be a young squire to you and absorb the vast river of knowledge in which you covet concerning the Riffle "WE" love as Americans.

[@boinger1988]

YAY! new autopsies... been waiting for some new content. keep up the good work

[@lyndalolson3067]

Also so enlightening...you do an excellent job at teaching! Thanks

[@actionjksn]

I bought my BCG a few years ago at a gun show and the only thing I knew about inspecting it was the staking. It's a no name brand made in a small shop somewhere in Ohio, the guy I bought it from for $150 couldn't give me any information either. Now that I've been watching these videos and know what to look for I have taken mine all apart and examining everything. I can't believe what I'm seeing! Everything I look at based on these videos looks freaking awesome. This thing is so good and the machining inside is excellent. I'm not sure if it's Chrome plated or nickel boron, the color looks similar to the ones in this video but I'm just not sure. The bolts and extractor are black. The sides of the bolt carrier have that kind of cool looking faceted shape. What I do know is everything looks really good. I am thinking about ordering some of those Springco springs though, just for good measure.

[@lawrenceaiello6561]

Just found your classes and think they are incredible and very helpful. I would love to know where you found all those fantastic gauges and where I can purchase them?

[@savvycivvy5644]

I love your videos, I have learned so much and am excited to continue learning. I hope I will have the opportunity to own and utilize a majority of the tools, gauges, and devices you use. Thank you and your amazing wife for providing such wonderful content.

[@TylerO_O.]

love your content . big thank you for teaching me so much... I'm a hobbyist I'd love to be high caliber (hhaha) in smithing and all the things you're teaching... I build out rifles but I'd if there's much of a market in my area for these skills. Oh well at least I can live vicariously though you!

[@andrewbrought7221]

Great video & terrific content as always! Thanks Chad & Donna.

[@lordofwar2006]

Time stamp 33:26 what size pin gauges are you using for the gas key ? I started make a gauge pin setup like your I've got most of the pins just a few left and i have to make the Stand for the bcg bore pins and the pin handles im getting there

[@fredsmith9788]

I recently saw an advertisement for nitrided gas keys that were metal injection molded. Can mil spec gas keys be MIM, or should they need to be machined from billet steel?

[@mattfleming86]

Glad to see the pros use a cordless drill as a lathe as well.

[@michaelhart946]

Chad have you or are you going to do any comparisons of left hand to right hand bolt? I'm curious if there is an actual difference between left hand bolts and right hand.

[@romeoechofoxtrot18]

Great video but the question I have is are these bolts magnetic particle inspected and high pressure tested?

[@don20190]

Fantastic vid. I have learned allot from you. Thank you so much for doing these. I thought Young Mfg didnt do staking of the screws because the used a recess in the carrier that an extended slot from the gas key fit into...I didnt see that on either of these two carriers.

[@brianfitz3218]

Fantastic video! I bought the Sinclair bolt vise based on a previous video you put out as well as numerous other armorers tools because of what I've learned watching you. I consider myself a hobbyist with aspirations to become an armorer someday. I would love to know where you source all your gauges, spare gas keys, springs, etc. I used to subscribe to the belief the AR was just Legos for Adults because everything is labeled "MilSpec". I can now fully appreciate what you refer to as "Tolerance Stacking" as I've encountered varying issues with both fully built ARs as well as ones I'm building from stripped lowers. You're an invaluable resource to guys like me. Thank you for the videos. Also I have to admire the great camera work by your wife

[@iamnotpaulavery]

I know. *I've got to get me a set of the gauges he uses!!* I've encountered the same issues as you did after putting together 6 ARs. The AR is the "Rolex" of rifles, with many parts that have to work well with the others in order to extract as much precision as possible. The AK is a Timex!

[@dmdm9198]

@@iamnotpaulavery where did you buy your guages from?

[@iamnotpaulavery]

@@dmdm9198 No, *I wish* I had the gauges he has. I don't have any specialized gauges.

[@williamboulanger3639]

Really ? - "a couple " AR's You did mean a couple thousand + !!! Great info as always thank you.

[@SchooloftheAmericanRifle]

I'm surprised anyone caught that. Good job.

[@ranchhandrandy3213]

Why do you prefer the insert to the o-ring? Also, where can I source a set of those gauges?

[@anthonyconner351]

Thank you for all the great content! I had a couple of quick questions if you have a chance. Do you prefer a phosphate BCG over nitride? Is one coating better than the other?

[@BombproofCraftsman]

Phosphate is old school, nitride is a more modern coating. Phosphate is porous and will hold lubricant, but it’s also more abrasive. Nitride is non porous & smoother. I personally prefer a slick coating on a bcg, they require less lubricant to operate smoothly. My favorite has always been a polished hard chrome, they will run even when dry If things are clean. And a bonus to a slick bcg is that they are easier to clean, carbon wipes away easily. And that’s the down side to phosphate, the porous nature traps carbon.

[@chipsterb4946]

Whoa! I did not know that the ejector roll pin needed to be replaced each time you remove it. Is that specific to this part or roll pins in general?

[@brianfitz3218]

Glad to see you posting new content again. I'd love to take one of your armorers classes down the road

[@333Kdigital]

You have some of the same stuff you would find on an aerospace and electrical engineers bench.

[@martinandrews8496]

I can't find where u get those coil spread my pins. What size are u buying? Are u cutting a bigger one down.

[@dgr1239]

It would be amazing if you did an analysis of the “new” Colt cr6920.

[@Mr_Clean]

Small arm solutions channel did a pretty good interview of the CR 6920 versus the Le 6920 if you haven't seen it

[@TylerO_O.]

can we get videos on other weapon systems soon too. Not just m16/ar15s? I would love to see some stuff on blowback, roller delayed , radial delay blowback actions, maybe even stuff with revolvers and timing etc.

[@SchooloftheAmericanRifle]

That's not in the cards. I stick to just this weapon system. I have over 150k invested in gauging, inspecting, testing, and teaching just about the AR family of weapons.

[@Chris-wp3ew]

Are you using a generic shop barrel when you do the headspace tests? I see you tried both bolts with that one (generic?) barrel. I "thought" the headspace test was for a specific bolt and a specific barrel? Along the lines of a matched set. Please educate me. Perhaps I'm making this more complicated than it needs to be.

[@davessparetime83]

I built a 7.62x39 AR-15 and it wouldn't go into battery. So after watching this video I looked at the extractor and it was stiff. Not much spring back. So after taking it off I found the spring laying sideways causing the issue. Thanks

[@uniquebassin7206]

Where can I buy these tools you use to check the tolerances?

[@webbzgunnuts]

About the YFS fasteners... what screws do you recommend and where do you get them ?

[@edwinlongwell]

OCKS screws. There are a few online retailers that carry them. Just google it.

[@BareSphereMass]

I would love to see LWRC and POF BCG Auatopsy!

[@toshmiller5571]

Thanks for all the knowledge Chad!!!

[@ThePatriotParadox]

Also must compliment you're wife on the camera work, really good at showing what is needed to see and staying with you're work and not staying off. I know my girl would've already got fed up with me and walked off...lol

[@wildlandoutdoors51]

Curious where you got all your gauges from???

[@iamnotpaulavery]

I have a Young BCG that I want to use in my AR. Do you suggest making the same mods? Who makes the replacement springs you used, btw?

[@wirebrush]

Springco is what he stated in the video.

[@benfrank1583]

Have you ever checked out a Franklin armory rifle?

[@kruelzombieful]

Will those springs work for an 7.62x39 ar bolt ?

[@YNTGUNS]

I just had a new barrel put in my colt m4, and I'm using my old m4 bolt and carrier, is this a problem? Do I need a new bolt? 4500 rounds thru the bolt.

[@nolanmcevoy2547]

Is the quality of the post KE buy out BCGs the same as the OG YM BCGs. I’ve been thinking about getting one but I know that sometimes when a company changes hands the quality can end up diminishing.

[@GreatMercenary]

Well I own 2 and so far so good. I haven't ran more than 2 or 3 mags in a row to see if the carrier screws come loose, but I can get them staked later on if I need to. They are kind of pricey, but they are chrome and it's supposed to be the best for BCGs.

[@navywolf1753]

No.

[@williamthompson9262]

I noticed you haven’t done an HMB bolt carrier… I have one that needs a physical

[@StrideResearch]

Need one of these for my Lantac enhanced carrier

[@MidwestSurvivalCompany]

Where do we get all these gauges

[@Eroc556]

How do we get things setup to send in? I have a couple barrels that would be great to see pass/fail??????

[@blip_bloop]

I also am curious I have an Anderson chrome BCG that is from a bad batch a few years ago, that I'd be curious to see autopsied.

[@beekeeper8474]

Do you do 308 bolts?

[@tee.jay.e2owboyp-dro364]

I'm in the process of shopping for a new 5.56 bcg & can't decide on what to get. What brands would you recommend? If you can recommend some.

[@209brandonb]

Just get a colt and know ur good.

[@tee.jay.e2owboyp-dro364]

@@209brandonb Oh yeah. Colts tried & true. 👍🏼

[@shadowfoxcorp]

Are you ever going to finish that colt 601?

[@SchooloftheAmericanRifle]

Yes. We do not have an ETA at this time due to our class schedule and other commitments such as gauge orders, repairs, and consult work.

[@sultros]

I have a general question about BCG operation I'm hoping someone can answer. This is in regards to an Aero Precision M5 BCG. Should the firing pin ever strike the primer during cycling / feeding / doing BCG things not involving using the trigger? For example: From the open bolt hold position, a magazine a loaded, the release is pressed and the BCG moves forward, loading a round, and going into battery. Without firing, the charging handle is pulled back ejecting the unfired cartridge. Safety is on. I discovered a shallow but clearly defined strike from the firing pin. Is that normal?

[@TMega5612]

Yes. The firing pins in most modern rifles do not have internal firing pin safeties or springs preventing them from hitting the primer. ARs and AKs do it and it's pretty much never a problem.

[@trivium09]

It’s normal, especially with AR-10s in my experience.

[@chloedemeter5473]

It's normal but it's also part of why military uses such hard primers. While it's rare slam fires have occurred. Especially in AR-10 and 7.62 x39 ARs with heavy buffers and buffer springs. I've had the latter happen once and a buddy had an old Colt AR set off a round while loading his HD gun in his kitchen. Always keep that muzzle pointed in a safe direction.

[@sultros]

@@chloedemeter5473 Really apprecaite the feedback and couldnt agree more on your last point. Thank you.

[@justsnuggle]

28:00 super tip of the day. Things I wish I knew 10 years ago. Some guessing trying to clean all the carbon out of the ledge where the gas ring transitions to freebore is not that important.

[@williamthompson9262]

My young hmb bolt failed the gas ring test new out of the box.. it shoots fine but man makes me worry

[@dothwalrus370]

Gas rings are cheap, replace them and move on, though that is disappointing. A lot of companies seem to have let their QC down to meet demands.

[@capbyrd01]

"chuck it up in your drill" I think mean my poorman's lathe.

[@nicg9599]

Did the national match cost more? Kinda poor qc on their part, right?

[@jammbbs1688]

Thank you for more videos

[@DACFalloutRanger]

I've missed these videos 🥺

[@onpsxmember]

A general question to the extractor donut/spring use: If both are used, does the donut (o-ring) reduce ingress of dirt in the space of the spring? Is the potential problem that the donut gets in the way of the spring when damaged?

[@ETC_Rohaly_USCG]

Even though I don’t have a set of Go/NoGo gauges, thank you for at least mentioning the dimensions... I can at least get a rough estimate of my dimensions with my calipers and one day, I hope to have as awesome of a bench as you. *Edit* With all of the tolerance stacking that can occur with COTS parts, at least I can match up various parts better, to get at least “mil-spec” fittings, lol!!! “If the term ‘Mil-Spec’ excites you, you have obviously never served in the Military” lol

[@jackjmaheriii]

I just received the non-NM BCG…. I’m sweating bullets!

[@MarkiusFox]

"That's your HOME! Are your too good for your HOME?!?!?!"

[@platypus1287]

What coating do you recommend on bcgs?

[@nicg9599]

not nickel boron

[@sackychin6267]

Hard chrome or phosphate only. I don’t buy into any of the wonder finishes anymore.

[@nicg9599]

@@sackychin6267 NP3 is also great

[@muddyhotdog4103]

I would've tried another extractor spring before dremeling material away on the extractor.. The one spring could've just been on the large side, and now when the spring is replaced in the future the next one might fall out easily because material was taken away that can't be put back.. Oh well, both cheap parts; but the spring is definitely cheaper (and probably more likely to be out of spec).

[@SchooloftheAmericanRifle]

I have several go and no go gauges for the extractor pocket. Each gauge is based on the spring used due to spring dimensions. I use 4 different gauges. I don't show everything on videos. I also cater my instruction based on my audience. For what it's worth, I have never opened a spring pocket excessively using the method shown in the video that resulted in the extractor not capturing a Colt Gold or Sprinco Spring. If I did or mistakenly do so in the future, I would replace it on my dime. I have a bin of TDP Spec Extractors. The extractor spring pockets on extractors are often too small for a proper Colt Gold Extractor Spring or 4/5 Coil Sprinco Springs without using excessive force. Excessive force can diminish the life of the spring. The fix is what I showed in the video or you can replace the extractor. Better have a lot of extractors on hand if you take that approach because most are undersized. Armorer's usually replace things that don't meet their standards, Good Gunsmiths can make changes. I'm both.

[@actionjksn]

​@@SchooloftheAmericanRifle Some people are scared to death of voiding a warranty. If you and the owner of those bolt carrier groups took that approach, that guy would still have two unstaked bolt carriers and his crappy screws would still be loose.

[@Nemesis4x4]

As always great camera work. Thanks to both of you.(Erick Foor)

[@onna-day7047]

@Nemesis4x4 Thank you! ☺️

[@HB-kp6rl]

Can i send you a Stag semi auto bcg? I bought the gun in 2009 and have less than 1k rounds on and its basically trash. Ive got an Aero Precision bcg I’m going to either replace of sell the whole gun. It’s way over gassed and still functions with worn out gas rings. Ejects to the 12:30-1:00. Might just send tou the whole gun as a blast from the past kinda thing

[@JimJones762x39]

What brand of gas key screws is he using @ 32:40?

[@NoWr2Run]

OCKS

[@JimJones762x39]

@@NoWr2Run 👍 thanks man

[@NoWr2Run]

T.Y. for sharing your knowledge, SIR. GREAT CAMERA WORK ALSO.

[@onna-day7047]

@nowr2run Thank you! ☺️

[@NoWr2Run]

@@onna-day7047 Well he couldn't have made such GREAT VIDEO WITHOUT YOU. I GIVE CREDIT WHERE CREDIT IS DUE & YOU'VE EARNED MY REPLY. It's a TEAM EFFORT making these WONDERFUL VIDS.

[@KnifeCursed]

I’m somewhat confused by your use of a dremel to hand grind the extractor spring pocket. Why not simply try another spring or two or try a bit harder to install the spring? Seems super wecsog to grind away like that with no gauging of the extractor spring pocket diameter, depth, or spring size.

[@goinhot9133]

Honestly I wondered the same, try another spring to see if it’s the spring or the hole. Hopefully he sees this and fill us in.

[@SchooloftheAmericanRifle]

@@goinhot9133 I have several go and no go gauges for the extractor pocket. Each gauge is based on the spring used due to spring dimensions. I use 4 different gauges. I don't show everything on videos. I also cater my instruction based on my audience. For what it's worth, I have never opened a spring pocket excessively using the method shown in the video that resulted in the extractor not capturing a Colt Gold or Sprinco Spring. If I did or mistakenly do so in the future, I would replace it on my dime. I have a bin of TDP Spec Extractors. The extractor spring pockets on extractors are often too small for a proper Colt Gold Extractor Spring or 4/5 Coil Sprinco Springs without using excessive force. Excessive force can diminish the life of the spring. The fix is what I showed in the video or you can replace the extractor. Better have a lot of extractors on hand if you take that approach because most are undersized. Armorer's usually replace things that don't meet their standards, Good Gunsmiths can make changes. I'm both.

[@goinhot9133]

@@SchooloftheAmericanRifle thank you for the long response, just trying to learn. Wasn’t doubting what you did, I knew there would be a reason. Thank you for the informative reply.

[@lokiwartooth1138]

@@SchooloftheAmericanRifle what dremel pig tail are you using? I like the metal

[@heathturnbow3922]

Thanks for the video. What bcg would you recommend as a premium bcg? Thanks for any advice!

[@theduck17]

Microbest seems to be a solid BCG. Toolcraft is a mil contractor so they'd be a good choice too. Daniel Defense makes theirs in-house and I've had good experience with them as well.

[@musician445]

Every manufacturer has the potential to put out lemons. Thats just how manufacturing goes. Even CNC machines are only as good as the bits they are using to cut the metal. Or as good as the imperfect human that calibrated the machine. When you look for a quality BCG, the consensus seems to be to look for companies with better reputations and better QC so that you have a better chance of getting a good part. But that still doesn't mean you're 100% guaranteed, its just a better chance. Best way imo, is to go with a good brand - BCM, Sons of Liberty Gun Works, Forward Controls Design, Daniel Defense, Microbest, Toolcraft, etc and then watch some more of Chad's BCG physicals and do some at home tests. In several videos he explains some at home ways to "gauge" your parts without actually having the precision gauges on his bench. Also, like he said, make sure that the part mates well with your build, make sure parts are not fitting too loose, or too tight. They could fail a gauge test, but mate well with the intended parts in the gun, because there is a spectrum of sizes that components fall into. I would also recommend getting a plain milspec style carrier. There are "enhanced BCG's" available that have modified components or dimensions that are designed to enhance reliability, but the application is far beyond what many people need. Although the enhancements are nifty and can genuinely do what they state, a well built "mil-spec" BCG will work great and last thousands upon thousands of rounds. The parts are more common and with proper maintenance and inspection, the carrier itself will probably last a lifetime even with incredibly high round counts. Sorry for the book, I just felt compelled to elaborate. I hope this helps.

[@realisrealite5554]

I have two Colt m4a1socoms a Geissele Urg-i complete clone on a Aero gen2 lower and a Dsa,Geissele,FN barreled upper on a Aero m4e1 lower.They all have Colt bcgs and are 100% reliable.With that being said there's levels of quality but junk is rare nowadays.

[@sackychin6267]

Lmt, Daniel defense, bcm.

[@sackychin6267]

@@theduck17 eh Toolcraft only makes carriers in house. From what I’ve heard, their bolts are subpar.

[@peeeoii2738]

Bolt face spec?

[@ceezedgerman]

What's the point of beveling the ejector?

[@chloedemeter5473]

My last response was in more detail but basically it prevents or at least vastly reducing peening and edge roll. Also chipping of the edge which can lead to longer cracks. Look into impact ends of tools like chisels and why/how to prevent mushrooming. The impacts against the cartridge can have the same effect on the extractor. Which can either break it or make it get stuck inside or outside of the hole it's supposed to drop into.

[@matthewbeaver5026]

Do you have a link for those gas key screws. 2 of my carriers have yfs fasteners. I don't want to attempt to break the staking until I have replacements.

[@sackychin6267]

I never understood young’s claim that use of permatex sealer is a replacement for staking

[@benfrank1583]

Would you recommend the POF USA BCG? I can't think of one better

[@benfrank1583]

@DVCasey0311 it's made by pof-usa mad scientists and has a bearing roller cam. Anything to reduce friction. Plus how it's made and treated

[@sackychin6267]

I don’t recommend the use of the roller cam pin in a non external piston ar

[@Mr_Clean]

@@benfrank1583 did Eugene Stoner use bearing roller cams?

[@benfrank1583]

@@Mr_Clean nope. It's modern shit bro.

[@benfrank1583]

@@sackychin6267 can I get a reason please

[@In-Midnight-Clad]

Not relevant to this video, but do you mark your cam pins arrows with a normal scribing tool? Does what kind of finish the BCG has matter?

[@SchooloftheAmericanRifle]

I use a starter drill bit. They are hard and don't flex. These bits will cut through any finish in the market.

[@In-Midnight-Clad]

@@SchooloftheAmericanRifle Great info. Thanks for the reply!

[@bladeflyer6]

Have you ever examined anything from Windham Weaponry?

[@renatusfox6552]

Any reason you prefer the inserts instead of the donuts?

[@justsnuggle]

Why should the ejector be rounded

[@chloedemeter5473]

Same as why the ends of punches and chisels should be rounded or chamfered. The squared off edge can peen and roll over. For this part it can causing a lip that can either prevent the extractor from being able to slide into it's hole or make it get stuck in there. Can also chip more easily and be the introduction point to longer cracks. Considered the conditions it operates under it's very much in a similar position to a chisel handle. The constant impacts while stripping and seating rounds is much the same. Really, look into chisel and punch handle geometry and why/how to avoid "mushrooming" of the end that's struck with the hammer if you're interested in seeing a lot of detailed breakdowns and images of the effect. That's probably the most common source of info on it. That's where I first learned the concept.

[@2of2DCH]

Dude you're seriously a national treasure. Appreciate the heck out of you for making these! Edit: huh those carriers do not have the tab & slot gas key setup

[@stefanmolnapor910]

Sound is good on my end

[@CertifiedBullpupHater]

Hey guys if anyone sees this and could help I would really appreciate. I’ve recently assembled my first complete upper. (SOLGW NOX, 13.7 barrel, gas block, Aero upper receiver and gas tube, bcm bolt, gieselle sch). This is on a lower with a sprain I blue spring and h2 buffer. For whatever reason when I shoot it if feels pretty soft and yet shoots a lot of gas in my face, like my bcm 11.5 suppressed shoots softer and has less gas blowback to my face. So I thought the barrel just had a really wide gas port (which is weird to me because it’s a Sons barrel)….but the thing is ejecting consistently at 4:30-5 o’clock…so it doesn’t make sense to me that it would be over gassed. I threw my sandy S on it and it felt like I stuck my face into the exhaust of some gas guzzling vehicle. Any ideas what is going on?

[@TylerO_O.]

triple 6 the demon carrier

[@spartus56996]

Why do you not use a NO GO gauge when checking headspace ??

[@andrewbrought7221]

@@chrispybean incorrect sir. In a three gage set Go green good, NoGo yellow acceptable, & FIELD red "Do NOT fire!" In a two gage set Go green good & NoGo red "Do NOT fire!"

[@spartus56996]

@@chrispybean It should close on a "Go" It may or may not close on a "NO GO" it should not close on a "FIELD" if it closes on a field take the rifle out of service.

[@spartus56996]

@@chrispybean Yes, that is correct to a point, checking with the NO GO gives an indication of a middle ground.

[@martinsonofwar395]

"Don't do this at home" 😂 made me chuckle

[@tech6263]

I have missed your video’s. Scratch Rebels ear.

[@donjohnson5172]

Young ought to be ashamed of themselves man. They thru all this bullshit posturing to state why they DONT stake their key screws, and then our boy breaks them loose with very little effort. For what they charge for those things, you’d think they’d make damn sure that they are torqued down and thread locked. If you aren’t gonna stake and you’re gonna make a big deal about not staking, you can’t stick your foot in your mouth like this.

[@vg1701]

These aren't new out of the box so it's really not right to say for sure.that this is a manufacturing error. Really they look like someone took the gas keys off before in the past and didn't do the proper diligence in reassembling them.

[@333BlkFlagg]

❤❤❤❤ saint chad

[@apb2887]

I have a few YM National match bcg's

[@ethan5.56]

I have a young manufacturing bcg leaking gas on the left side of the carrier key. Young manufacturing told me to re torque the gas key screws to 56 inch pounds and it the leak continues they'll send me a return shipping label

[@bryy2053]

Maybe someone can help....I emailed springco to see what springs I would need (not including buffer) for a daniel defense M4V7 PDW. The man responded and said he had no idea and I would have to buy them and experiment with them. He said they got 7 emails that week alone from people who had issues replacing springs for that gun in particular and he couldn't help me. I just want to replace the factory springs with their "equivalent." Thanks for the videos SOTAR. Good work

[@SchooloftheAmericanRifle]

Sprinco was right. Without understanding the efficiency of your individual gas system, suggesting buffer springs and buffers can be problematic. That applies to all buffers and springs, not just Sprinco.

[@bryy2053]

@@SchooloftheAmericanRifle i naively thought they may have had a datasheet on many factory guns and could tell me "this spring works in x, these work in y," since it is a factory gun and not something I built myself. I saw where he was coming from anyway.

[@oldscratch3535]

Are you having problems with it or do you just want to replace them?

[@bryy2053]

@@oldscratch3535 it runs flawless and since its one of the two setups I have that comes with me everywhere I go and shoot a lot I was going to replace the springs in them so they will basically last a lifetime. The other is a centurion arms 11.5 cm4, so I wanted to do that one too. But I hit the wall after talking to springco and put it on the back burner because they run fine anyway.

[@oldscratch3535]

@@bryy2053 Well, unless you feel like spending the cash and time to buy every spring combo they offer and figure out what works, I'd say just buy whatever DD recommends if you want backups. I personally use the Damage Industries chrome silicon springs. You can get them for $5 on sale. Rated for 750K cycles. No spring noise. They're coated so they don't rust or corrode. They're $5...you can't beat that for what you're getting. Springco does make some of the best springs and they're a good source for heavier or lighter springs. I just don't have a need for that. One of my softest shooting guns is a 13.7" Ballistic Advantage Hanson profile barrel with a D.I. chrome silicon spring and an H2 buffer. However, 90% of that is the barrel and very small gas port size.

[@surgetsann]

Yikes. Going DD for chrome in the future.

[@GreatMercenary]

Looks like Daniel Defense discontinued their chrome BCG. Too bad because I would have liked to have one to try out.

[@kevengarcia89]

No sound?

[@SchooloftheAmericanRifle]

I think KZbin did something. Several people reported no sound after the video initially posted. It seems to be good now. Can you confirm?

[@JerrBearTactical]

@@SchooloftheAmericanRifle sound is great 👍

[@kevengarcia89]

Yes it works now

[@glocksundgeworfenheit_]

Must be an inexpensive shop because you could buy a new bolt for a few more hours of labor on this one