Faxon 6" 300 BLK AR15 Barrel Review (1:5 Twist)

update to the poor man´s sig mcx rattler platform i built. this time reviewing the faxon 6" barrel with a 1:5 twist.

[@PracticalTacticalSheepDog]

I did an SBR build using the Faxon 6in 1:5..... I used a troy tomahawk PDW stock system. Runs flawlessly, no tuning needed.

[@eitrisenhancementsllc]

Thanks for sharing! I pinned this comment to give viewers more options!

[@PracticalTacticalSheepDog]

@@eitrisenhancementsllc Faxon 6in 1:5 Barrel Faxon .750 gas block Faxon Pistol gas tube Aero completed Upper Aero Atlas-1 4.8in handguard Troy Tomahawk PDW kit W/BCG Wilson Stripped lower Geissele Ultra duty LPK Geissele SSA-E trigger Midwest industries combat rifle sights P/A ACSS 300blk 3x micro prism No tuning required runs every subsonic ammo iv tried without any hiccups.

[@eitrisenhancementsllc]

@@PracticalTacticalSheepDog hows that handguard look and feel on that barrel?

[@PracticalTacticalSheepDog]

@@eitrisenhancementsllc check my community page, I just posted a picture of it.

[@PracticalTacticalSheepDog]

@@eitrisenhancementsllc feels okay, wish I had a touch more rail space but it's all a compromise when you're going that short

[@Quad_Balanced]

Thanks for the update. I’m on a similar journey. Your insights have beeen pivotal

[@eitrisenhancementsllc]

Glad this helped!

[@seventhmonkey458]

Great videos on this builds and I learned a lot. Just a couple of points: On dust covers - this rifle lives in an EDC bag along with other items. Yes, it gets it's own compartment in a well designed bag like the Vertx bags. Still, lint and crap gets in there. I'd rather be safe than sorry especially since you also have the folding stock adapter to deal with. Few people take the time to ensure the bag or compartments are as clean as they were when new, so anything you can do to mitigate potential problems appeals to me. The forward assist is also mandatory for me, at least until I can find a way to do a press check without. If you are comfortable not know for absolute certain that the first round was chambered before you pull the trigger then don't worry about it.

[@marksbet]

Only review I have seen on this barrel. Thanks so much for making this video.

[@eitrisenhancementsllc]

Glad i could help!

[@aermotors]

Glad you mentioned the gas block, forgot I had a borescope and went in and got it tweaked just right. Really excited to tune this system and see what it can do!

[@eitrisenhancementsllc]

Glad i could help! Its usually not as crucial on regular barrels but since this gas port is so big, if its off at all it will hinder performance.

[@davidb8070]

In the midst of the BA 6” frustration that I started over a year ago. Thanks for the info!

[@eitrisenhancementsllc]

Glad to help!

[@davelpz3340]

I built one with the Faxon 7.5” 1:5 twist, and a PSA HBPDW lower as it comes complete. It ran great, haven’t had a chance to try it with a can yet. I had about 5-6” group at 200 yards with just a primary arms MD25. I’m happy with it considering it’s just a 7.5” barrel shooting 300bo. I only shot 125 grain I believe, steel case.

[@eitrisenhancementsllc]

Thats a really good group with a red dot at 200 yards, especially with steel case! I do have to say im not a huge fan of the hbpdw brace but i know its really well made. Im glad to hear though that the setup works well!

[@davelpz3340]

@@eitrisenhancementsllc So far, waiting for my suppressor.

[@loydlamberson8942]

I have that same barrel, are you still shooting 125gr steel case? Have you used anything else that is safe?

[@alanphillips1344]

Without a can, how loud is it? Looking to build a backpack rifle so I must anticipate using indoors too.

[@davelpz3340]

@@alanphillips1344it’s as loud as a short ar is. Since getting my Surefire 300sps I haven’t shot without a can. It is my favorite rifle though.

[@kylegatewood4947]

I bought a Faxon 7.5 inch barrel and like it. Here’s my setup: SA bleed off gas block, LWRCI BCG, Lantac CPR 360 cam pin, David Tubbs .308 flat wire spring and a TACCOM 3G 3 Stage Carbine buffer and topped off with a Diligent Defense Enticer S.

[@nickintherealworld225]

I would think that 220 grain subs would be the best for in home defense. To avoid rounds going through walls into other houses.

[@basrutten641]

195gr Boar Axe by Callaway is extremely effective- not cheap

[@nickintherealworld225]

@@basrutten641 thanks I’m new to 300 blackout so far very reliable and very quiet

[@Thisthat1234]

This barrel is all over the Reddti 300blk group yet this is the only review on this barrel

[@sbranham86]

I have a v seven 10.25” 300blk barrel but was thinking of going shorter, was looking at the 7.5” 1/5t gunner Faxon barrel

[@johnviera3884]

I have worked on multiple Faxon and ballistic advantage barrels. They all require that same gap between the shoulder and the gas block.

[@saintfoam776]

Just ordered the BA 8.3" 1:7 barrel and wish I would've seen this before! I plan on shooting mostly subs (suppressed) but wanted to be able to shoot supers and subs accurately.

[@richardwinters1445]

Converted my 5.56 to 300 with this barrel. Only spent a short time at an indoor range to see what would happen. 25 yard groups with a red dot were less than an inch using AAC 110 vmax. I'm not sure If i will buy that brand any longer though after reading all of the online separation stories. I did have a bit of brass and or copper in my upper receiver when I took it apart. I should have looked closely to see if it was jacket or case. When I loaded with 220 subs I couldn't get ejection. Got maybe half way out of the chamber. Also tried with a Sprinco yellow and 2-5/8 buffer. No point in shooting subs though like you said until my can comes in. Note: there is a small chamfer/cut on the shoulder of the gas journal. My non Faxon gas block lined right up to the forward edge of that cut in order for the holes to be aligned. It's probably 1/32" ish.

[@eitrisenhancementsllc]

Was the copper you saw in the upper as metal shavings? Gas blocks are kindof all over the place in dimensions which is why i suggest a borescope. But i think from what i understood we may be using the same method. Ive started using the muzzle device as my stop for my gas block instead of the barrel shoulder. Its worked great for me so far. You still need to make sure its aligned side to side though.

[@richardwinters1445]

Yes, metal shavings and one was pretty big. Probably 1/8" in size. I will have to do more shooting before I put a can on it so I can determine which ammo it was. I was shooting AAC 110 gr v-max and Federal 220 gr. Perhaps it was just the new Faxon barrel chamber just being slightly too sharp along the edges. No bore scope yet, but for any gas block I've done, I have had good results just measuring with the depth gauge on my calipers the center of the hole from the end of the block and the center of the hole in the barrel from the journal shoulder. @@eitrisenhancementsllc

[@isaakjunkeer785]

@@richardwinters1445definitely the 110 vmax! That ammo is TRASH! Their 9mm & 556 seem to be fine though. Pretty sure there’s a reason it’s the ONLY ammo you can’t leave a review on lol!

[@basrutten641]

@@isaakjunkeer785I have seen Reddit threads of AAC 5.56 separating jackets as well- and some cans destroyed as a result. Seems PSA says to send it and they will cover those claims. SLR makes a very nice jog for dimpling your barrels but 416R SS is a MF to drill even with a quality cobalt drill bit and cutting oil

[@vincentapuron2750]

+ Can you do an accuracy test on both subs and suppers? I have a BA and am considering swapping to the Faxon.

[@eitrisenhancementsllc]

I would love to but unfortunately i dont have the time or optics for it. 300blk isnt known for being an accurate round so keep that in mind. As i stated in the video, i did notice improved accuracy. But i have no proof of this. Id say: unless you are having really bad accuracy out of the BA, keep the BA. If you want an overall upgrade, then switch to the faxon. All i can say is from my experience with both, the faxon is 100% the better buy.

[@homezilla]

i had to drill out the 5" V7 barrel to a .125" gas port also.

[@juanthelawnmowerthief1641]

Not sure if BA did something different with their 6 inch 300 blackout barrel but with all of my other BA barrels in 300 blk, 556, 6.5 Grendel and 6.5 Creedmoor but I’ve always left a gap between the gas block and the shoulder of the gas block journal and verified with a bore scope that it was in line with the gas port. Did you verify it was lined up with the gas port when the gas block was up against the shoulder? If not then perhaps that’s what was causing the problem. I do agree a 1/5 twist on the fax on is the way to go and not sure why BA hasn’t done one yet.

[@arcxcc]

I did a build using this barrel, the faxon lightweight bcg and the hbdpw brace system. runs flawlessly for me! I posted a short video of it on my account. just thought i'd comment for any one who was curious about a combo like this.

[@moderngunguy3666]

For a range toy you don't need a dust cover but if you want reliability at its highest then yes of course you need a dust cover.. mud/dirt tests will prove that to you quickly

[@eitrisenhancementsllc]

@@moderngunguy3666 you should check out the mud and dirt tests inrangetv has done on ar’s they have proven to be quite good with mud due to the location of the bcg vents. We have also tortured one of our own uppers, and it didn’t care until we got a rock into the locking lugs. That would’ve stopped anything. Even then, pouring water down the barrel is all that was needed to bring it back.

[@moderngunguy3666]

@@eitrisenhancementsllc Yeah the AR even beats out the AK especially with the dust cover inrangeTV has done a few tests also

[@HiMyNameIsJonathan]

Dope build brotha

[@rphash49]

Just put a very similar build together, Same barrel. With AAC 208 and 220 subs I'm having feeding issues. Geissle spring with empty buffer weight and not enough juice to feed. 1st thought was I misaligned the gas block(Faxon block) but before I called it a day I tried some AAC 110gr and 115gr supers and it feed perfect even using a H3 weight. Side note: chrono has subs at 895avg, supers 1880avg. I'll borescope the barrel but I'm confident it's good. Will buy an aluminum extension and yellow sprinco and see how the subs work

[@eitrisenhancementsllc]

There is actually a bunch of different things that it could be! You should definitely move down to a sprinco yellow. My current setup has no issues cycling any and all subs I’ve been able to buy locally, including s&b, 208gr hornady and ammo inc stelth. But there is a ton of parts that I’ve used to make sure my platform cycles everything. You can find all this info on my website!

[@rphash49]

@@eitrisenhancementsllc it's weird, the supers felt over gassed while the subs were under. Hopefully the yellow spring resolves the issue without having to use the lightweight extension. I checked alignment with a borescope and it's perfect. I'll check your website out

[@eitrisenhancementsllc]

That feeling you are talking about is based on the heavy mass with the heavy spring. With such a large gas port you are accidentally “over-charging” the system by running so much mass and spring. Reduce mass, friction, spring and your recoil will go down with supers. My setup is very comfortable with both subs and supers. You’ll be able to find all that info you need on the site! Definitely use the contact form if you have any further questions or need further explanation, id be happy to help!

[@rphash49]

@@eitrisenhancementsllc got it running reliably with subs, feels real smooth. Standard gas rings, empty buffer weight, yellow sprinco with standard law extension. Tried a combination with a JP gas ring and no bueno. Little annoying I had to use an empty buffer weight but it a dedicated subsonic gun so it's fine. If I decide to run supers I'll throw in a H1 Before changing anything I double checked the gas block alignment and it is perfect. I used a Faxon block for easy alignment and I doubled the barrel.

[@eitrisenhancementsllc]

Good deal! The jp gas ring does require an efficient carrier to work properly. But I am glad to see you got it operational. What subs were you trying to get to function? Also what bcg are you using? Some subs are g2g with minor tweaks due to the slower powders which is why I ask about brand. I personally don’t switch weights anymore since I found over-gassed solutions so that the increased bolt velocity is a non-issue for me when running supers Out of curiosity, did you end up checking out the site?

[@konoctiswigwam8130]

The fact that BA doesn't update the size of the gas port hole is probably enough for most to know...🤔

[@eitrisenhancementsllc]

Its just baffling to me that they continue the undergassing trend. It is soooo much easier to fix an overgassed barrel than to have someone void their warranty to fix their product. But maybe thats what they want……. Either way, i know they can make good barrels, just gotta pay the extra for the solgw branded stuff as they have a higher degree of quality control, and they have proper gas port sizes on them. Id say its worth the extra $$$$

[@drewjitsu1943]

Your video has steered me in the right direction in more ways than one. So thanks! I ordered a 7.5 faxon for my build shortly before stumbling on your videos. Question... You shoot primarily supers, so why does the 1:5 really appeal to you? Is there a reason other than subsonic stability that I'm missing?

[@eitrisenhancementsllc]

Glad i could help! I have been shooting subs more recently. The main idea behind it is 100% because of subs. However the 1:5 can still benefit extremely short barrels as the bullet rpm is directly proportional to velocity. This means that the 1:5 can help bring up supers up to proper rpm. Do they need them? Maybe, maybe not. But it is more appropriate that the shorter the barrel is, the faster the twist should be. Personally believe the 1:5 shouldn’t be used for barrels longer than 8” purely because of the effect it may have on supers. I Can get more into it if you join my webinar tomorrow! I cant link it but you can find it on my website through google!

[@frope01]

Peculiar. I’m finding the adjustable gas block seats too close to the threads.

[@gringoinflorida]

Great video, What ammo is good for a non suppressed sbr 300? I'm looking to get one and trying to pick out good ammo Thank you

[@marksbet]

I bought the 300 Blackout 6 inch Faxon barrel. Would like the handguard to end up just below the threads of the barrel or possibly meet the threads of the barrel. Would a 5.5 inch handguard be to long? Or a 5.0 inch be better? Know it might depend on the handguard manufacturer . Any help would be greatly appreciated. Thanks

[@eitrisenhancementsllc]

From the info ive gathered i wouldnt go with anything longer than 5.25” So far that i know of, SLR rifleworks makes a 5” and a 5.25”, kaw valley precision makes a 5” as well. Aero makes a 4.8” And of course what im using is a midwest 4.5” Im okay with the short guy as it promotes me staying away from the muzzle, especially being so short. Hope this helps

[@itzPowell]

I'm taller, and am getting ready to start my build. I too would like the handguard to meet at or before the threads. I'd prefer as much "real estate" for whatever grip I go with. Seems it would make most sense then for me to go with the 5.25" length handguard. I realize it's only an additional 3/4". Is that even noticeable? Should I just get the 4.5 if I wouldn't benefit from the extra length?

[@eitrisenhancementsllc]

@itzPowell personally the difference will mostly be cosmetic. Its such a small difference it really shouldnt matter too much. That said. There is a big reason to go with the SLR 5.25” with picatinny. And that is that the picatinny gives you way more accessory positions than the single mlok slot you get at the bottom of the shorter handguards Also, BG defense sells an mlok 5.25” handguard as well that is less expensive than the SLR. However it does need to be timed which the SLR does not

[@itzPowell]

Thank you for the quick response! I got a basic carbine buffer tube with an H2 buffer, and the yellow sprinco you recommended. Will this work? I will primarily shoot 220 subs suppressed. I am using a non adjustable Sharps XPB BCG... It sounds like I may have to get the adjustable BCG if I ever wanted to reliably shoot anything else unsuppressed... Is this correct?

[@eitrisenhancementsllc]

@itzPowell not a problem! There should be no need for the adjustable BCG. You absolutely can get away with an h2 buffer with your setup, although personally i would go with a carbine buffer. But thats dependent on what subs you will be using and the rest of your internal setup. I actually just set up a website for this specific reason, i cant link it due to youtube policy but it would be great help if you could check it out and give me some feedback! Just google my whole youtube channel name and you should be able to find it as its own site. Start at the FAQ page and you should be able to move from there. Its also a great way to support the channel! Let me know if you have any more questions! I can also support through the contact page!

[@flashgross]

Do you think a person would have to drill out the gas port on the Faxon 7.5" 300blk barrel?

[@niilespunkari8832]

The camera man was happy that he was not shot. Notice, accidents sometimes happens.

[@eitrisenhancementsllc]

The camera man was conscious of his positioning and well aware of the drills. Not only that, but the shooter was aware of the cameraman and never flagged the cameraman. We train frequently and we are always well aware of what is to be done and what not to do to ensure the safety of everyone involved.

[@VincitOmniaVeritas7]

If you are going to run 220gr subs, 1:5 is the way to go with shorter 300 blk barrels like this. Sadly, most manufacturers only offer 1:8 and maybe 1:7 (which could be enough for a 16” or even 10.5” barrel). I wonder how much more expensive is to produce a 1:5 barrel because it’s basically only high priced brands like Q, Faxon and Sig making them.

[@eitrisenhancementsllc]

You are correct! I dont believe there is a need for a 1/5 on anything longer than 7”-8” barrel Its all based on time in barrel, and rpm to stabilize. Hence why 308 subs can stabilize with a 1/10 just fine Its a niche item if im being completely honest. And should only be used on super short barrels But even with a 6” barrel, supers are way overspun even with their velocity losses My calculations would mean a 6” barrel needs a 1-6 twist to achieve the same rpm as a 1/10 308 bullet of the same grain Hope this makes sense

[@VincitOmniaVeritas7]

@@eitrisenhancementsllc I agree it’s a niche gun, but when you already own a lot of firearms, filling all niches becomes an urge. lol I have almost everything I want on my collection, but one of the things I’m still missing is a .300BLK PDW. I’ve been following closely the recent releases of CMMG, Sig, Foxtrot Mike and PSA, but I still couldn’t find the “perfect” PDW: small enough to fit a backpack, but capable of shooting subs and supers accurately. I wanted a short barrel with a quick twist rate like the Sig, but with a side charging handle and preferably a “direct impingement” like the FM/CMMG. These personalized builds like yours seen to be the way to go. Did you have the chance to try those new bullpup conversions like the TRIAD? A3 tactical told me it can be used with barrels as short as 7.5”-8.5” (from FM, JAKL and MAT uppers).

[@JPE_DRAEB]

Can you please tell me what handguard did you use on this barrel? Thank you

[@eitrisenhancementsllc]

The one in the video is a midwest industries 4.5” combat rail, but i highly recommend just paying extra for the slr rifleworks 5.25”

[@andrewnesbitt2523]

Random question: Why use up an M-LOK slot with a Magpul QD mount instead of using the QD mount that's milled into the handguard?

[@eitrisenhancementsllc]

That’s a great question! Basically the location of the QD slot is smack dab in the middle of where my hand would go on the handguard. It sucks because I was excited to not have to purchase a QD attachment when I got it, but I quickly realized that QD slot was basically useless as there was literally no way I could place my hand without holding the QD itself. So I chose to ignore it and add a QD that was out of my way!

[@brianebberson985]

I'm curious if you are still using the Berry's plated bullets with the 5 twist barrel with success. I know you have to keep the velocities in check to be under the RPM's.

[@eitrisenhancementsllc]

I am not anymore. You basically have to keep velocities under 850 and even that is asking for trouble. Bullet drop is already bad at 1000, it’s even worse with that velocity.

[@drewjitsu1943]

What ammo are you running from palmetto? I just bought sabre black tip 125gr and 220gr but have since realized that these are cup and core bullets... Forgive me but... Is this plated? I also order AAC 125gr FMJ. I understand FMJ is not a solid copper bullet so is that safe too? I have the 7.5 faxon. Thanks for all your content and testing.

[@eitrisenhancementsllc]

I was running FMJ. Cup and core appears to be simply a different term for just an open tip bullet from what I’ve gathered! Basically anything that PSA makes will be g2g. The only projectiles you need to watch out for are the “plated” projectiles, such as the berry’s spire point projectiles. This is because the copper plating is substantially thinner and offers no structural rigidity compared to FMJ or hollows/open tip. All FMJ, hollow points or cup and core bullets are good to shoot out of the 1:5!

[@drewjitsu1943]

Sick, Thank you!

[@sgtspaulding9461]

Any idea what the weight is on your setup? If I missed it I apologize.

[@loydlamberson8942]

I heard you mentioned that you run mainly 125 and some 200 grains, can you list what exact ammo you used? I have that same barrel in a 7.5 and wanted to know what was safe shooting suppressed.

[@eitrisenhancementsllc]

Ive been running AAC 125gr supers, as well as 125gr sierra matchkings Ive also ran 200gr winchester subs, 220gr remington subs, 190gr hornady sub-x, 220gr sierra matchking, 220gr hornady eld-x It stabilizes everything with no issues Both the 220gr sierra matchking and hornady eld-x were my own reloads, as well as the 125gr sierramatchkings

[@EzraLopezUSPSA]

For clarification: does this setup properly LRBHO with subs? I think in your BA video with lightweight LAW extension + empty buffer I remember you saying it did not lock back

[@eitrisenhancementsllc]

It does with certain subs. The lighter mass was too gassy for my own subs with cfe blk. But remington subs, winchester white box subs and my own cfe blk subs all get LRBHO with the heavier 2oz extension and 3oz buffer with the sprinco yellow. The lighter setup was a reliability enhancer, but since i make my own subs now and i had gas to face with my own subs i chose to add mass. However, fiocchi subs wouldnt reliably cycle with the lighter setup. And s&b subs cycled but wouldnt lock back with the lighter setup Depending on the can you use, you may be able to use a higher backpressure can to reduce these problems Its also worth noting that i am actually able to get LRBHO with my cfe blk subs with the lighter setup and WITHOUT a suppressor.

[@ahumm8280]

How do you like this build vs other 6 inch 300 bo builds?

[@Pseudodennis]

How do we feel about adjustable gas blocks with this barrel?

[@eitrisenhancementsllc]

This is a difficult question to answer on text, as the answer is very dependent on what ammo you intend to run on it. If you plan on running only supers, suppressed or unsuppressed, then sure. Adjustable gas blocks is a great way to avoid mass tuning. HOWEVER, the gas block journal is very limited on what type of adjustable gas block you use as the muzzle device is right up against it. (Ex: Superlative gas blocks dont fit) If you plan on using subsonics, then an adjustable gas block is useless, since all it can do is reduce gas. And in this case you need all the gas thats available, so its entirely pointless. If you copy my setup, it allows you to run supers suppressed, supers unsuppressed, and subsonics suppressed. All with the twist of a screwdriver and easily repeatable

[@Pseudodennis]

@@eitrisenhancementsllc interesting! Thanks for the info. I don’t have any experience with an adjustable bcg. Looks like it’s time to try one out! Thanks

[@eitrisenhancementsllc]

@@Pseudodennis its a great option! If you subscribe and give me till tomorrow morning ill be uploading the review for the adjustable bcg in which i discuss its use for 300blk and things to consider when running it to guarantee success. Its information packed so itll help you understand it better and how to use it properly with 300blk

[@eitrisenhancementsllc]

@@Pseudodennis my bootleg adjustable bcg review is up! This should help your decision!

[@alanphillips1344]

I am more curious about building my 300 blkout pdw without using a suppressor. Originally looking at 5.7x28 for low recoil and sound. But the 300 packs more power. How would you compare the two? What is the muzzle flash like on this short barrel?

[@eitrisenhancementsllc]

5.7 is still a very loud round in itself. With 300blk you at least have the option of increased energy on target. With the benefit of reducing muzzle blast with subsonics. Subs unsuppressed wont be quiet of course. But they definitely wont be as loud as 5.7 or supers! Just make sure you use hollow points if you plan on using 300blk subs!

[@alanphillips1344]

@@eitrisenhancementsllc planning on using for carry in a sling pack, so might not have the ability to pop on hearing protection that quick, if needed.

[@aguakangenh2717]

Love it!!

[@Strawman333]

Hello Eitri, I’m waiting on my suppressor (Dead air sandman s) to install on my 300 blackout 8” pistol length BA upper/barrel with a .750 gas block journal. Standard buffer wt. It also has a Law tactical folder with the 2oz bolt extension. I want it to cycle subs and supers reliably. I’ve heard so many different opinions. Buffer wt., adjustable gas blocks, barrels, etc. Would you mind sharing your thoughts? If not, I understand.

[@eitrisenhancementsllc]

Of course! Your barrel length should be pretty worry free. But i would advise against adjustable gas blocks. Run a standard gas block. Use a sprinco yellow reduced power spring and start from there. More than likely you wont need anything else from there. Once you get the can, see if it runs subs with the can on. If it doesnt, remove the interal weights from the buffer and try again, if that doesnt work, get a KAK lightweight law folder extension. It should run after that without issues. You always want to gas your gun for subs with a can. As that means itll run supers with or without the can. It may be a little overgassed with supers and a can. But you will know when you get there. Let me know once you’re there and i can keep helping you, i dont want to overwhelm you with info so just follow the steps i wrote to begin with!

[@Strawman333]

@@eitrisenhancementsllc I love the mechanics of the AR platform. I’m just a “tinkerer” but continue to learn more. I’ve only “built” a couple of AR-15s from scratch with success. I owe some of that knowledge to people like yourself, that have shared their experiences. I’m going to go through the logical steps that you mentioned, and get mine tuned for reliability. I really appreciate the response and advice. I will get back to you when my “muffler” lol gets approved and I get on the range with it. 👊🏼

[@EzraLopezUSPSA]

@@eitrisenhancementsllc with an 8” barrel full time suppressed shooting subs, yellow spring, and law folder, is the Bootleg adjustable BCG still necessary? Or should it work okay with a regular 5.56 BCG?

[@eitrisenhancementsllc]

@@EzraLopezUSPSA itll work fine with a standard bcg no matter what. But if you tune for subs and then switch to supers you will be extremely overgassed for supers with the can on. So long story short, if you plan on using the can 100% and only run subs 100% of the time, then the bootleg bcg isnt necessary. If you plan on shooting subs and supers suppressed, the bootleg is also not necessary, but i recommend it to prevent your gun from beating itself to death, and it improves the recoil impulse as well as eliminating gas to face.

[@Strawman333]

@@eitrisenhancementsllc I have to update you: I switched out my BCG springs to sprinco ejection/extractor springs. I also switched the buffer spring to a Sprinco “yellow” as you advised. Now my 8” AR 300 blackout suppressed (with Law folder ‘steel bolt exstension’) runs perfect! Honestly, 750 rnds with about 600-650 of 220gr subs and the rest with 110gr vmax supers and no issues at all so far. So stoked! Thanks for your experience and input for helping me!

[@Brimwald]

Can't find these 1:5 barrels in stock

[@eitrisenhancementsllc]

They go fast! Put your email in to get notified on the faxon or brownells website. They are 100% worth the wait.

[@100ghillie]

They just came back in stock this morning, hope they are still there! get on faxons website

[@sbranham86]

Have you tried Kak industries?

[@eitrisenhancementsllc]

@@sbranham86 i personally havent. Ive considered them, but havent had a need since their barrels are over 6”

[@mattstarr2674]

They are instock everywhere now

[@antoniolima98]

I’m gonna build this just can’t find the barrel in stock. Happy holidays been waiting for this vid

[@eitrisenhancementsllc]

Get on faxons website to get notified when its back in stock! Youll love it! Happy holidays as well!

[@100ghillie]

hey get there quick, faxon just got them restocked! hope you have notifications on yt comments on. thank me after you order!

[@drewjitsu1943]

I just ordered a bunch of 125 gr supers from palmetto... Worried now for my can as I just noticed they are all cup and core bullets and not solid copper. Should I shoot without can? Confirm they aren't fragmenting and call it good?

[@eitrisenhancementsllc]

You’ll be fine! Ive shot close to 1k rnds of 125gr supers through my barrel without issues. Close to half of those were were PSA 125gr supers so I can say with certainty you will be fine! They are not the most accurate but they function perfectly!

[@drewjitsu1943]

They are the 125gr sabre black tip. Is cup and core different than plated?

[@eitrisenhancementsllc]

I replied to your contact! But yes, plated and jacketed bullets are different! They both still use lead cores but plated projectiles use very thin coatings, which offer no structural rigidity to it unlike jacketed bullets.

[@drewjitsu1943]

Got it! Thanks for all the knowledge. 300 blk requires all the optimization. Love it

[@derrictaylor1181]

He didn't stress it enough, check your gasblocks boys and girls. My "fake break" as Eitri's Enhancements named it is up and running perfectly with handloaded subs.

[@eitrisenhancementsllc]

You right! Shouldve mentioned it more! I still need to try h110 with my subs!

[@zion1]

Good information 👍

[@charleswildonger7472]

Any supers this won't stabilize and like? I ran some AAC brand 125GR FMJ through mine with a Sandman K and I was keyholing at 18 yards or so and I got home and noticed I had a baffle strike. Very slight and won't affect the can as long as I don't keep doing it....but I had 2 middle baffles get nicked, the first baffle, last baffle, and end cap are fine. Ran some Underwood 115GR Controlled Chaos the same day no problems

[@eitrisenhancementsllc]

You sure it was the ammo and not the can? I shoot aac 125gr all the time and have had zero issues So far it has stabilized everything i give it.

[@charleswildonger7472]

@eitrisenhancementsllc It could very well be the can. I did put rounds of another brand through it right after they keyhole/C hair of a strike with no adjustment to the can with zero issues 🤷🏼‍♂️. Kinda nervous to try again tbh. But again very well could be the can. I am in the middle of swapping barrels anyway to a 8.2ish length to untuck the can and run a normal carbine buffer and not the maxim scw stock. This way I can swap between the 300 black and a 5.56 upper

[@joeboterf2523]

Are you planning on trying out the Law Tactical ARIC bcg

[@eitrisenhancementsllc]

I considered it. But im not sure i care enough about it firing folded. Not to mention that switching over would eliminate my adjustable bolt carrier. Its also $400 for it, its honestly a little much. Especially when you factor that you need to use a law folder for it to work. So add another $250 to that. I do have alot of money in my setup. But firing folded is more of a novelty to me. I may change my mind later if it comes down in price. But at its current cost and with me losing my gas adjustments, i dont think its worth it for me.

[@november750william8]

Any issues with supersonic loads through the 1-5 twist barrel ?

[@eitrisenhancementsllc]

Not really, although purely due to bullet rpm i would probably stick to heavier projectiles. I havent tested it but i have a theory that heavier projectiles should be more accurate than lighter ones because of the reduction of rpm. But like i said, its a theory. I have yet to test it Otherwise no issues really

[@november750william8]

@@eitrisenhancementsllc Thanks. Im getting the 7.5 inch Faxon barrel for my build that will I will short subs and supers through it.

[@november750william8]

@@eitrisenhancementsllc If I had to guess the rumor of over spinning the bullet with a 1-5 twist barrel causing jacket separation was probably started because someone bought a box of the Berry’s plated bullets and didn’t read the warnings. Like I said just a guess.

[@eitrisenhancementsllc]

This is probably true. But its also a fact that high rpm objects require to be balanced for said rpm. The higher the rpm, the more precise the balance is required. So its safe to say that over-spinning an object not designed for that high rpm can cause an oscillation. Even if the bullet itself doesn’t disintegrate, the oscillation will affect ballistics all together. Maybe not fall apart, but widen due to the centrifugal force. (This action slows rpm) This may not be an issue with say sierra matchkings, but with basic cheap ammo, it very possibly could. But yes, plated bullets are a whole other animal. Definitely not meant to do that. But the fact that midway usa sells smk’s as factory seconds (blems/rejects) then its 100% a thing that defects can and will show up in the accuracy department if not accounted for.

[@Hobbbuddy]

I really don’t have the money for a borescope do you have a link to something affordable?

[@eitrisenhancementsllc]

Unfortunately the most affordable borescope is from teslong and can be bought on amazon. I cant post links but if you are using a vltor gas block like i suggest, you can skip the borescope if you use a bubble level to get the same angle on the gas block (flat surface under gas block) when using the receiver rail as a reference, and a .025” shim between the gas block and “gas block shoulder”. This is by far the easiest and cheapest process. I still use the borescope to verify after, but the above method has yet to fail me.

[@Hobbbuddy]

@@eitrisenhancementsllc yes I did just order some stuff off your site which included the gas block. Does it include a gas tube as well?

[@eitrisenhancementsllc]

@Hobbbuddy the gas block itself does not include a gas tube unfortunately. When did you place the order?

[@Hobbbuddy]

@@eitrisenhancementsllc do you have a gas tube that your would recommend? I ordered on May 3rd, bolt barrel and gas block. I’m also in MI

[@Hobbbuddy]

@@eitrisenhancementsllc have your tried using a jp captured buffer system on this build?

[@theboatman6]

Any issues with supers and baffle strikes from fragmentation?

[@eitrisenhancementsllc]

No sir! This barrel length reduces supers velocities and therefore RPM is also reduced. Its still slightly overspun, but still actually pretty close to being optimum for supers when compared to RPM from a 308 projectile. 1:6 would be the ideal twist for this barrel to match 308 RPM.

[@theboatman6]

Thank you for the reply and input. This is my next build!@@eitrisenhancementsllc

[@eitrisenhancementsllc]

@theboatman6 make sure you check out our site! We have everything there to make sure it runs for you right!

[@theboatman6]

@@eitrisenhancementsllc will do!

[@illestdomer2005]

Unless you’re running just subs, why not use an AGB?

[@eitrisenhancementsllc]

AGB’s only reduce gas, not to mention that although they do offer benefits, the hassle of switching them from one position to another wasn’t convenient enough to warrant them. So with such a gas deprived system, reducing gas isn’t a great option. And then with the only good adjustable gas option requiring a tool, well, that makes it severely inconvenient. Which means you are better off leaving it at full gas. Therefore eliminating its benefits.

[@illestdomer2005]

@@eitrisenhancementsllc fair point for the 6”. I asked elsewhere if you see the 7.5” main advantage being able to run the Riflespeed AGB because that one is much easier to adjust for repeatable set points?

[@eitrisenhancementsllc]

@@illestdomer2005 I was actually gonna respond to that one next haha So, yes that would be a good reason to choose the 7.5 over the 6” As well as if you intend on using supers, since they do help with velocity a bit. My only issue with the RS is that there are too many settings and too many ammo types. You will never be able to remember which ammo belongs to what gas position. I’ve found it best to simply make the operational range wider. That way it can run everything equally well. And then to prevent excess recoil, simply reduce the reciprocating mass. If you do these 2, in the end you end up with a more gas efficient system, with a larger operational window, with decent recoil impulse, with none of the worries of accidentally choosing the wrong gas position. I recommend you check out my website as I have a lot of descriptions to parts and how they can help the operational window!

[@illestdomer2005]

@@eitrisenhancementsllc I checked out your website the other day, but I didn’t find much. Do you build uppers, or do you provide consulting to builders? On Riflespeed, I think that’s a fair point re: range of adjustments, but I have my plunger and buffer system dialed in to run 125gr supers on setting 2 and 220gr subs on 10-12, depending on the ammo, all suppressed. Like you, I don’t care about reliability with subs unsuppressed. If this rifle were an EDC, yes, I would just live it with being overgassed so I never had to worry about anything. You can still do that with an AGB. It just gives you the ability to dial it in if you want the most pleasant experience.

[@eitrisenhancementsllc]

@illestdomer2005 I can’t really mention much about the site here because of KZbin policy, but if you like you can message me directly from the site and I can speak more freely about it. I do think the riflespeed is an excellent option. I dont personally think I’ll ever purchase one but i really do believe it is an excellent design and super convenient. I just wish there was a way for me to have pre-set positions like the mcx and such instead of a bunch of numbers. Then I would be ecstatic with the setup. I do agree with it being a superb pleasant experience, I used to love that about the bootleg. But then it just got old switching back and forth. The riflespeed would’ve probably been a lifesaver in that scenario, however, its just not possible on the 6” so I never considered it for my platform. I have used a superlative system on many rifles before, and I do recommend it highly as well. But it is very dependent on what platform im building at the time. I am still looking into other forms of adjustment, like the rubber city armory gas key, I’ve got that on a build that I’m waiting on the pin and weld barrel to come back!

[@joshuabruce9920]

Strike industries(not much of a fan)makes a dust cover like the magpul that snaps in and its got rubber or something on the outside that makes it open really quietly, id be curious if it would absorb that energy and keep it from flipping back up in your way.

[@tomweaver7723]

Ok but how does it do with supers???

[@eitrisenhancementsllc]

Well i feed it a steady diet of 125gr supers and it absolutely loves em. At full bleed on the bootleg i still get full reliability and no gas to face

[@metabang03]

.125 inch gas port seems big by 40 thousandths or more lol. Mine unsuppressed, pistol length is .067 and i use a h3 buffer.... it came .063 and needed an adjustment...

[@eitrisenhancementsllc]

The size of this gas port is due to its short dwell time in relation to its use with subs. Supers would absolutely not need a gas port this large. And could absolutely run with an h3 unsuppressed. What’s your barrel length? Supers? Subs?

[@ronin_5.453]

Will it shoot subs suppressed and un suppressed

[@eitrisenhancementsllc]

Yes, but only with cfe blk powder

[@ronin_5.453]

Gotcha so most likely it will not shoot factory subs without a suppressor? I have a noveske ghetto blaster that I just put a Faxon 6 inch barrel into because I want to do one and five twist. The noveske barrel would shoot supers and subs factory ammo without a suppressor so that’s why I was asking.

[@kimb.8671]

Have you ever shot a 380 tho

[@eitrisenhancementsllc]

Actually yes i have! But it was too much power for me 😂

[@gregquigley3878]

Does anyone know if this barrel will cycle sub’s without a can?

[@eitrisenhancementsllc]

I do, the answer is yes, but i had to run an empty buffer, reduced power spring, and it was with my own reloads using cfe blk powder. Its still very loud, because theres no can, and you just lost alot of energy with the subs, so theres virtually no point

[@gregquigley3878]

@@eitrisenhancementsllc thank you! 👍🏻

[@asianmovement]

you spent like $5k on 300blk ammo filming this. Damn

[@eitrisenhancementsllc]

300blk is only like 0.60 cents a round. I make my own too sometimes so its even less than that with most of my loads

[@careynorris9961]

No dust cover, no bueno

[@sydneyearle7693]

Is that a CZ as a side arm? Are you poor?

[@eitrisenhancementsllc]

I am 100% poor. Could be worse though, i could actually own an anderson lower……. Wait……. Dang it i own one!! 😫

[@JoeAnton420]

CZ is for the discerning gentleman only. If you want to impress your friends by how much you spend on your stuff buy something else. If you want to make them envious of how much better shooting yours is than theirs get a cz75b

[@jonnybgoode7742]

Most barrels come dimpled. That's weird

[@eitrisenhancementsllc]

Faxon doesnt dimple their barrels, neither does BA

[@slavikarlov]

Two questions: 1-wht not just buy a mcx rattler upper kit. 2-how's it like living with your mom, asking for a friend.

[@eitrisenhancementsllc]

To answer question 1: The rattler is alot of money all at once. This can be pieced together slowly and/or for alot less money. Its lighter than the rattler. No proprietary parts. I can use whatever trigger i want. I can use whatever parts i want. The list goes on. But at the end of the day, its all preference or what you can afford. Either will serve you well. As far as question 2: This is an educational firearms channel. Your question is inappropriate under youtube policy and not related to what the channel is about so i will not entertain answering it. Let me know if you have any further questions! Thanks!

[@shootfirst408]

I was going to get the BA barrel, I’m planning on mostly shooting supers as I don’t have a suppressor.

[@eitrisenhancementsllc]

BA barrel is fine if you just want to shoot supers. Id still rather have the larger port though