Pull the bolt back and rotate the cam pin 90-degrees. Ejects the spent cartridge after firing. Ok, I am a total noobie. Colt AR6951 Bolt Catch is the only dedicated 9MM Bolt Catch that I am familiar with.and know of. But there are A LOT of choices. I think I broke my gun. Add to Wish List Add to Compare. LANTAC E-BCG Nickel Boron Enhanced Bolt Carrier Group EBCG (2) Sale. Now that your bolt is back so far, is it now stuck in the buffer? Also the charging handle lever, rails, and CH race in the upper. Rifle Bolts & Bolt Carrier Groups | Brownells How to Fix Common AR-15 Malfunctions and Stoppages - Wing Tactical WMD Guns AR15 Bolt Carrier Group - NiB-X (Faceted) $164.00. It's nice to know whether or not it's live, even though it is going to be treated like it is anyways. 1. (another big mistake) and the bolt and carrier is now stuck in the upper receiver. I can pull the entire bolt carrier group back into the tube but it will seize. The bolt carrier and Bolt would not fully seat. *Must have a registered ARFCOM account to win. Don't know if that's what was needed or not, but as I said, it worked fine yesterday. Well I would completely take that BCG apart and wash and clean it up good, then lube real well, it looks dirty to me, I don't clean my guns every time I shoot them and none of my BCG's look that dirty, also being a Sharps BCG, I would pick up a back up BCG. I would double check this. Help! New M4 bolt hanging/sticking - Benelli USA Forums Short and to-the-point Video: AR-15 Bolt Carrier Group Disassembly (BCG) and Reassembly is really easy when you know what to do. Put your pins back in and smack the buttstock on the ground. I had a broken decapping pin from a reloading die end up in my chamber once. [ARCHIVED THREAD] - Bolt carrier stuck in buffer tube. Any ideas? The purpose of the special 9MM Catch is to allow the bolt hold open feature to function with the Colt 32 Round magazines, their clones and modified UZI magazines. Yes. I believe my recoil spring is binding inside the bold carrier when I pull the charging handle all the way to the rear. This unfortunately allows the 9MM bolt to travel further down the buffer tube than necessary. Solution Part Three I have learned over the years that all AR-15 recoil springs are not created equal. You will be able to leave a comment after signing in, AR15Armory.com The quickest way to find problems with a weapon is to simply shoot it and shoot it a lot. Before replacing the upper, do one more test--swap both the charging handles and the BCGs of the rifles. Honda CR-V 7/10. There are two engines available in the Honda CR-V . Use a quality recoil spring. Solution Part Two Some shooters have reduced recoil and improved reliability buy using a 9mm AR buffer that in addition to being longer than standard 9mm AR buffer it is also heavier. B2-K630-BA00. no accidental firing. buffer tube), or threaded tail of the lower receiver where the receiver extension screws in. edit: I also tried bashing on a cleaning rod, but because it can push back into the buffer tube, it's hard to get a good bash. Going back to the question of whether or not the upper from the problem rifle works fine with the non-problem lower, if it does, then the issue might be tolerance stacking. The AR-15 bolt carrier group, or BCG, is a critical and often misunderstood piece of the AR-15/M16 upper receiver. Bolt Carrier Groups for 5.56/.223 and 7.62 x 39. BCG USA Take a pic of the rear of the bolt lugs. Harry from UBR Tech gave a tutorial on how to disassemble and reassemble a Sig P320This video is to show you how to assemble and disassemble purposes of repa. Best 9mm Bolt Carrier Groups (BCG) - Sniper Country Unity Tactical Modlite ModButton Lite - Surefire/Modlite . I pretty much run a magazine, wet th bcg, wet, etc for a couple hundred rounds. Up to this point in time, I've not had any problems achieving this with common milspec BCG parts. See if there's any damage to the 45 degree relief cuts. The reason why I ask is its very common with new guns for an assembler to not have that buffer tube screwed in far enough to hold that retaining pin which is spring loaded down. LANTAC 223/5.56 E-BCG Full Auto Style Bolt Carrier Group - Nickel Boron. When the bullet passes by the gas port , the bur shaves a little off the bullet and the gasses send it down the gas tube back into the BCG . The gas key is staked on both sides of both bolts. White Label Armory 5.56 Bolt Carrier Group Billet Extractor Blue PVD M16 AR15 BCG . . I would really appreciate your support!https://www.buymeacoffee.com/dmonyerH Time Codes:0:00 Start with Bolt Carrier Group already removed from AR-15 rifle0:14 Remove the BCG Cotter Pin \u0026 Firing Pin0:29 Remove the bolt from the Carrier0:54 Remove the Extractor from the Bolt1:33 Reassembly of the AR-15 Bolt Carrier Group2:01 Check the Gas rings \u0026 Lubricate the Bolt3:20 Assemble the Bolt to the Carrier4:00 Reinstall the Firing Pin \u0026 Cotter PinThis video will show you every simple step and you will be a pro in no time! Those pictures don't help. And most people don't know how to lube an AR bolt carrier group. You could also look at the forward assist. Page. What can cause a bolt to get stuck? - AR15.COM All Rights Reserved. This over-travel condition allows the 9MM AR Bolt to travel too fast in the forward direction causing premature failure of the bolt catch. The bolt carrier group is complete; before continuing lightly apply your oil/lube across the entire BCG but especially the contact . Full . I do, however, keep the barrel extension and chamber relatively clean. Or, You might have a burst shell casing that's hung up on the Bolt. . In Stock. A different 9MM buffer is needed and possibly a higher quality buffer spring. This full auto carrier is heat treated and precision machined. The bolt carrier group is also a part of the upper receiver to an AR-15. View Details Aero Precision AR-15 PRO Series Bolt Carrier Group (BCG) - Black Nitride . Add to Cart. Reason Two The blow back nature of the 9MM AR recoil system provides the 9MM bolt with some serious energy and velocity. Did you see the FBMG Saiga 308 threads or the AGP threads holy lord. Now if you look at the 9mm buffer specifications below you will notice that most 9mm AR buffers are longer than the Colt or RRA which are the traditional standards. AR 10 Charging Handles Review. 1. Is it ok to tap on the charging handle with a rubber mallet? Shop with us and get the best bolt carrier group on the market today! All AR-15 platform rifles ha. It is comprised of the bolt, carrier, extractor, ejector, gas key, gas rings, cam pin, firing [in, and the firing pin retaining pin. By How To Clean Your AR15 Bolt Carrier Group - 5D Tactical A $34.95 value! Keep reading below. Reason One - A 9MM AR Bolt is shorter than a milspec AR-15 Bolt Carrier Group. K. ken4570tc in WY Gunny Sergeant. Help: Bolt stuck forward in carrier, can't separate upper from - reddit Well, despite my shoulder, I went to the range yesterday. You could try to remove the buffer tube. Any way you could get a screwdiver in there and move it forward. #mortartechnique #ar15charginghandlestuck #stuckcharginghandle0:00 Thumbnail Intro0:06 My 1st hand experience with this type of malfunction0:45 re-creating the malfunction with an empty shell casing1:32 How to fix your ar-15 malfunction using the mortaring technique2:08 problem solved! Anderson Ar 15 Lower Parts Kit ReviewThis model was created using real 16" 5.56 / .223 1x7 GOVERNMENT 4150 CrMoV MELONITE NITRIDE BARREL - MID-LENGTH GAS. Pushed on it and heard it click. 276-BCG15 | Bear Creek Arsenal. As far as I know this only applies to 9MM AR rifles, SBRs, carbines and pistols who use a 9MM specific AR bolt catch. I read earlier in posts about cleaning and will say this in my experience as long as you have your stick lubed up with a decent CLP, it really shouldn't matter how dirty it is given your AO. I never thought it was going to open! AR 15 BCG | | Toolcraft, FailZero | Bolt Carrier Group - SpiceTac The bolt carrier group is responsible for the following 4 critical steps. AR-15 Bolt Carrier Groups | Palmetto State Armory Shop CMC Triggers Enhanced AR Bolt Carrier Group | Up to 10% Off 4.3 Star Rating on 6 Reviews for CMC Triggers Enhanced AR Bolt Carrier Group Best Rated + Free Shipping over $49. On my new rifle, I've been having an issue where the bolt carrier tends to get "stuck" or locks back. View Details F-1 Firearms 5.56 NATO DuraBolt Bolt Carrier Group (BCG) - TTZ Gold . The image below gives a nice breakdown of the parts in a typical BCG. Which in turn fires the bullet. Reason One A 9MM AR Bolt is shorter than a milspec AR-15 Bolt Carrier Group. Out of stock. "Rack" pull the charging handle of your AR-15 back swiftly with ample force and release it . I can take out the pins and the upper an lower come apart a bit, but I can't completely remove them. $ 73.99 - $ 75.99. BCA AR-15 Bolt Carrier Group Black Nitride. mortaring your rifle fixes this type 4 malfunction that occurs in the AR15 weapon platform. I had a blown primer do the same thing to mine. You might not have noticed. SALE PRICE: $137.75. When I let the BCG go forward, won't go into battery enough for the BCG to clear the buffer tube. If he only fires his own reloads . (Ok, i admit, it was a CMMG bargain bin). What you are going to have to do is "mortar" it. Its always nice to exclude thing as being the problem . The bolt carrier group controls all functions of the AR15 - chambering, firing, and extracting spent rounds. Could be a combination of tight tolerances and baked on carbon. Grabbing onto and ejecting the spent casing from the fired round. The two bolts Sharps supplied were in DLC (Black) and NiB-X Silver coating and boast the following manufacturer specs. October 22, 2019 2:57 am Reply Gary. If you have any experience to offer send us a message. While I think a well broken in AR probably doesn't need as much lube as I put on it, you may be stretching the limits there OP. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. The BCG of this rifle is binding in the buffer tube every time I cock it (starts getting stuck around 1/2 - 2/3 of the way back) but when I put the upper from my nicer rifle on this lower, it doesn't bind so obliviously it isn't the buffer tube. If you have another BCG I'd try it. AR-15 Nitride Bolt Carrier Group Mil-Spec. I was able to separate the upper from the lower. I put another fifty rounds or so through the gun. I currently have the lower fully assembled, upper receiver, bolt carrier group, and charging handle. The BCG moves freely already. Immediate Action: " Tap, Rack, and Reassess ". Unfortunately it will take several weeks to have corrected. Just bought a AR15 carbine on sunday. This unfortunately allows the 9MM bolt to travel further down the buffer tube than necessary. The charging handle would not pull back to eject the live round in the chamber. You dont need any tools to break down the bolt carrier group for detailed cleaning.Website Article: https://kydexowbholsters.com/how-to-disassemble-clean-an-ar-15-rifleFor detailed Ejector and Extractor Disassembly, go to: https://kydexowbholsters.com/how-to-disassemble-an-ar-15-bcg-bolt-carrier-groupLinks in this description are affiliate links to help support the channel. When you took it apart, was the buffer spring staying in the buffer? 9mm Nitride Hybrid Bolt Carrier Group for Glock & Colt AR15 mags $ 224.89 $ 119.00-20% Out of stock. Taking the lower off didn't change a thing, so the problem is definitely limited to the upper. $157.49. If the bolt carrier gets stuck in the non-problem rifle, but the bolt carrier does not get stuck in the problem rifle, the charging handle is at least part of the problem--I would examine it and replace it. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Add to Wish List Add to Compare. The bolt carrier is sticking out of the back of the upper receiver about 1/4". bolt stuck in carrier. - Armalite AR-10 - 308AR.com Community Why is My bcg is binding in the buffer tube? : r/ar15 - reddit Conclusion To prevent a 9MM AR Broken Bolt Catch select a 9mm AR buffer that is at least 3.600 inches long and weighs more than 5.5 ounces. Then point the muzzle straight up and rap the butt sharply on the ground. Toggle menu. Re: Stuck bolt carrier group Post by Roadrunner Sat Feb 14, 2015 2:58 am Might be possible to take a wood dowl and drive the bolt back into battery from ejection port. Bolt Carrier Groups - 3dcart Stuck bolt carrier group -300BlkTalk Get an AR-10 bolt carrier group and get to shooting. 6.5 Grendel Bolt Carrier Group . Not really a good habbit to be sticking stuff in there from the muzzle, but I'd make an exception. 9MM AR TROUBLESHOOTING - AR15Tactical.com Today, I was taking it out, and I could not for the life of me get the bolt to unlock. Use common sense. When i work the bolt via the charging handle, the bolt will get stuck in the buffer tube. Was able to unstick the bolt carrier and the other good news is no round in the chamber. We carry Aero Precision, Toolcraft, Fail Zero and Spike's Tactical BCGs with Nickel Boron, Black Nitride, Ionbond DLC, Chrome/Magnesium Phosphate and Titanium Nitride-Gold finishes with M16 . The Lower Parts Kit for AM-15 includes the following: Bolt Catch . Been playing this a lot with my teenage son, and having a blast. If you do that, remve the end plate slowly so the spring and detent for the take down pin doesn't come flying out. Compete against real players in the multiplayer racing. 406-304-8183 Login or Sign Up; 0. Your first round will go bang but on ejecting, the casing won't be able to eject. Reliable AR 10 Rifles. It seems there is a ridge in the inner channel and if the bolt is pushed too deep into the carrier, the gas rings stick on that channel. Keeping the gun pointed in a safe direction-preferably muzzle up, hold the gun by the handguard and the charging handle. You may have to lightly push on the FA, but you shouldn't have to jam on it to get into go into battery. !2:14 My theories and speculation as to what causes this malfunction to happen2:51 Asking for viewers opinions on what causes this common malfunction3:20 IMPORTANT!! Bet-your-life dependability is a non-negotiable prerequisite. Those vids are insane. The issue is the bolt won't move inside the BCG, and therefore won't go into battery . $124.95 On sale: $114.95 Back Order. Yes. It'll likely serve you well afterwards. Platform: AR-10. If you are looking for a bolt carrier group for sale, Surplus Ammo has what you need. It is not stuck in battery. Than, lift the rifle up about 1 foot or so and bring it onto the ground with considerable force. (What can cause a bolt to get stuck?) Clean each well and lube well. http://www.bushmaster.com/anatomy_bushmaster.asp. I read the title (What can cause a bolt to get stuck?) Courtesy Firearms History. Clean the barrel nut lugs. It is not stuck in battery. The general consensus is brute force. Basically your gun stopped shooting, something doesnt fit or worst of all your gun experienced a hardware failure. Are you sure it's the bolt binding, and it's not bound on the gas tube? Don't think so. Strangely enough, the problem BCG works perfectly in my personal AR. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. AR-308 Accuracy problems. Car Parking Multiplayer Speed GlitchFor those of you who love cars, or Any suggestions? Take off the stock, loosen the castle nut, and unscrew the buffer tube. Any way you could get a screwdiver in there and move it forward. I was function checking the movement of the bolt and thats when i ran into the problem. If you have a standard stock, you can remove the upper buttplate screw and insert a small rod and tap the carrier forward. and responded with an answer, because my bolt (well entire carrier really) did in fact get stuck in the open position due to the . In Stock. You can leave almost the entire thing dry, as most of it doesn't touch anything. Maybe a loose Gas Key holding it up? I'm assuming the problem is the BCG, but I don't get why it works on my nice ar but not on the cheapo ar. PSA 5.56 Phosphate MPI Full-Auto Bolt Carrier Group . The easy way to do this is to get on your knees, lay the stock flat against the floor, make sure the stock is fully retracted, grab the charging handle with one hand, and the forend with the other. !echo: don't have to mess around with buffer springs and trigger springs, a drop in unit, has a trigger lock where you can't out run the bolt. Was in a hurry putting my MPX back together after cleaning and put the bolt carrier group into the upper receiver backwards. Disassemble and clean/lube the sharps BCG. The round (unfired) would eject but the bolt would not seat. Only problem is now the bolt carrier is stuck back all the way and won't go forward. Packaged Bolt Carrier Group Assembly w/ Logo . While pulling the charging handle, drive the buttstock into the ground being careful not to bend the charging handle. AR-15 mortaring technique unjam a stuck bolt & charging - YouTube Bolt Carrier Bounce: Causes and Solutions - Sturgeon's House Method 1: Change Your Buffer Spring. Out of stock. I did it last weekend. AR-15 BCG Getting Stuck in Buffer Tube - AR15Armory.com Open the actions of both rifles and show pictures of the uppers from the rear, the lowers from the top, and the bolt carrier groups, as well as the charging handles--photograph the components from the top, as well as side profiles. This is not a break in issue. TFB Armorer's Bench: Complete AR15 Disassembly - Bolt Carrier Group CMMG and Rock River Arms also offer 9MM AR specific bolt catches. Sometimes if the cotter pin is put in wrong it can catch. here is the album of photos, let me know if there are any others i should include: http://imgur.com/gallery/ezQxC. Radian Weapons Enhanced Bolt Carrier Group (BCG) $ 210.00 Read more; Radian Weapons Takedown Pins Kit - AR15 $ 32.95 - $ 54.95 Select options; Keep In Touch. Batch MPI and HPT tested. Maybe there is/was a bur in the barrel at the gas port . The bolt seats very early in the cycle. Who Makes Solgw BarrelsI've made 3 different orders from SOLGW recently Regular Price $169.99 Special Price $89.99. I didn't have any issues with the bolt/bullet sticking and didn't have to practice my mortaring technique. (with a live round in the chamberLOL. I use mostly Mobil 1 though about anything is better than nothing. Add to Wish List Add to Compare. AR-15 Bolt Carrier Groups for Sale | Mid State Firearms won't clear the lower because the BCG is still sticking into the buffer tube about half an inch. EDIT: FIXED! What BCG? We offer bolt carrier groups for various AR-15 builds. Failure to Feed, Chamber or lock (Click image to view larger image) Probable Causes. Shop KAK AR-15 Lower Parts Kit | 10% Off 4. Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: on the back side of the bolt (not the bcg), on the rounded/sloped part just behind the two c-rings where there's often a good amount of caked carbon on well used bolts, there was a solid deposit of fouling and copper. The AR-15 bolt carrier group contains vital components for proper functioning of your firearm. It's a solid bolt carrier group, with a few upgrades over a true mil-spec bolt carrier group. SALE PRICE: $89.99. Service consists of a few blasts of Brake cleaner, a few pulls through with a boresnake, and a drop of lube everywhere the BCG gets shiny. "Tap" your magazine to be sure it is properly seated. aren't particularly expensive and are generally between $50 and $100 for a complete LPK inclusive of fire control . If the BCG is that far back it shouldn't be too hung up. Absolutely. AR-15 Bolt Carrier Group (BCG): How it Works, Maintenance and How to AR-15 Bolt Carrier Group (BCG): How To Disassemble - YouTube You are using an out of date browser. This wouldn't be the first time I'm wrong but if possible try running your stick with a standard mil-spec/phosphate finish BCG and see what happens bro. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Angstadt Arms Bolt Carrier Group - 9mm. 227-GTBCG | Guntec. Odin Works AR-15 6.5 Grendel Black Nitride Type 2 Bolt Carrier Group Usually Ships in 24 Hours MSRP: $149.00 . $290.99 On sale: $228.95 In Stock. Free Account glitch cars Please share with your friends . The BCG is stuck pretty far back in the buffer tube. Or did you ever take the BCG apart? Charpy C-Notch. Do I need to remove the buttstock? Now press the forward assist to make sure the bolt is locked up. Now the bolt/carrier is sticking like crazy. The case wound up being stuck in the chamber (it didn't burst or anything, but was stuck in there pretty good). If the problem still occurs in the problem rifle, then those two components are not contributing to the problem and the issue is the alignment of the upper to the lower receiver extension. Because the BCG is half an inch or so into the buffer tube, I can't separate the two halves. Caliber / Gauge: .308 / 6.5 Creedmoor / .243 Winchester / .22-250. Bolt Finish: Parkerized. 2. The rifle shot fine, although I'm not so sure about myself. , the company's American branch. Well it sounds like the bolt is not wanting to rotate and unlock from the chamber. AR 15 Bolt Carrier Group Parts | Midsouth Shooters Blitzkrieg Components 9mm Hydraulic Buffer, Hahn Precision Pistol Cartridge Buffer 9mm Buffer, CMMG 9mm Heavy Buffer90CA9B4 - Length 0.000", Weight 5.3 Ounces, Yankee Hill Machine 9mm BufferYHM-925-A - Length 3.600", Weight 5.9 Ounces, Spikes Tactical ST-9X 9mm Buffer SLA009X - Length 3.700", Weight - 8.5 Ounces (No longer produced), Heavy Buffers 9Q Buffer - Length 0.000, Weight 8.5 Ounces (No longer published but much longer than the Colt 9mm buffer), Heavy Buffers 9QT Buffer - Length 0.000, Weight 12 Ounces (For SBR's and Full Auto) (See Above), New Frontier Armory 9mm Buffer - Length 0.000, Weight 8.0 Ounces, New Frontier Armory 9mm Buffer - Length 0.000, Weight 10.0 Ounces, VLTOR A5 H4 Heavy Buffer - Length 3.995, Weight 6.83 Ounces. How the bolt carrier group works In a normal AR-15 (note, not an AR-9) is when you fire a round, the gas will be redirected from the spent cartridge from the . From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Concrete and rebar 12in thick ceiling, walls and floor. If your bolt is stuck and you've shot more than 1000 rounds, the culprit might be your buffer spring. DrBob, I did not see any problem with the lower. AR15 Bolt Carrier Groups - Arm or Ally Before you do any removing of anything, or hacksawing please do the following. November 14, 2010 in The Beginners AR15 Armory. Lube those too. BCA's Bolt carrier groups are MPI inspected. There is a couple reasons for this common issue of a broken bolt stop, broken bolt catch with the 9MM AR platform. Noteworthy AR 10 . Does the round at all look deformed? Was the bolt stuck with a round in the chamber? If that fails tap the Handle. The key moves this gas into the bolt carrier group; this unlocks the BCG and pushes . Reactions: ken4570tc in WY. If your pretty sure you have a live round in there, I'd take it to he Armorer. Out of stock. Oh and yes i know this is referred to as "mortaring". No wonder it is locking up. Bolt Carrier Groups (BCG) for Sale - Rainier Arms Here I will give a brief breakdown of the BCG's components, how it works, problems to look for and what to consider when buying. The purpose of this page is to aid you with 9MM AR troubleshooting. The BCG is all the way back. It cleared fine. The majority of weapon failures stem from issues with the bolt carrier group, and a good bolt carrier group can keep the failures to a . The BCG will get stuck half way through the buffer tube and sometimes all the way in the buffer tube. TLDR: Your rifles are fine. BCG stuck No, when the BCG moves rearward, the bolt is held by the receiver extension. So far the drum stuff hasnt been that bad, course having Mike around to post updates & videos helped a ton. Try this: swap BCGs, not uppers. From my own personal experience, installing a bolt 180deg opposite of where it should be in the carrier.or essentiallyejector facing inside the upper receiver. Flat Dark Earth m16 FDE pvd ar15 bolt carrier group BCG $ 248.80 $ 199.80-43%. AR Bolt binding in buffer tube HELP!!! - Pirate 4x4 AR-10 .308 / .243 / 6.5 Creedmoor BCG Bolt Carrier Group Grabbing onto a new round from the magazine and chambering it. The Bolt Carrier Group (BCG) is an assembly made up of several individual parts that work in harmony to ensure your AR-pattern rifle functions properly. ? 158; HP/MPI Inspected bolt Contact who you purchased it from. Some thrifty and clever shooters have added spacers, five stacked quarters etc in their buttstock, added weights to their buffers and made modifications to the buffer to increase its overall length and weight. Copyright 1996-2023 AR15.COM LLC. I tried cycling it a few times and it never would seat. If all is well, I'd remove bcg 3-4 times, reinsert, etc. Step One: Complete AR15 Disassembly - Bolt Carrier Group. The bolt has seized inside the carrier in the forward/fully extended position. I took out the XPB BCG and put my original BCG back in and it runs smooth after that. A call to armalite confirmed this. The mass & inertia of the bolt carrier group will pop the stuck round out of the chamber. Tensile strengths of 1550-1600 mpa, or 220,000-235,000 psi. Bolt Carrier Group lubrication choices | Bob Is The Oil Guy thanks for your reply. Jones. In my opinion this is less than ideal. The Sig Sauer P320: the multi caliber,. How To Disassemble an AR-15 Bolt Carrier Group - RE Factor Tactical Arm or Ally AR15 / M16 5.56 NATO Bolt Carrier Group - Black Nitride.
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