Me being relatively new to the AK, but not new to disassembly/reassembly of mechanical things, I can tell you don't force anything. Check the charging handle / channel, bcg / chamber if anything goofy. As the BCG moves rearward with the bolt and cam pin held in place, the machined slot in the BCG that the cam pin rides,acts on the cam pin and rotates the bolt until the bolt lugs clear the extension allowing the bolt to move rearward. That would meen that chamber has never seen a steel case . . Bet-your-life dependability is a non-negotiable prerequisite. It is not stuck in battery. My AR's are wet inside. "Tap" your magazine to be sure it is properly seated. I like to see the BCG slide into battery and lock by it's own weight when released into the unistalled upper from anything more than a 45* muzzledown angle. AT3 AR-15 Bolt Carrier Group - 5.56 NATO/.300 Blackout - Nickel Boron. Expand. 1. Let me ask you a question. Well it sounds like the bolt is not wanting to rotate and unlock from the chamber. 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. Those vids are insane. Flat Dark Earth m16 FDE pvd ar15 bolt carrier group BCG $ 248.80 $ 199.80-43%. Re: help!!!! (I had my M&P15 do this occasionally when using steel case ammo I never could figure out what it was about the steel cased ammo that was causing the problem) Have you tried to manually run some rounds thru it with a full magizine to see if any get stuck? When you took it apart, was the buffer spring staying in the buffer? K. ken4570tc in WY Gunny Sergeant. Here is a video on how to do it. I was able to separate the upper from the lower. Put the gun back together. JavaScript is disabled. 227-GTBCG | Guntec. what lower? $129.99. Press question mark to learn the rest of the keyboard shortcuts. View as Grid List. The case wound up being stuck in the chamber (it didn't burst or anything, but was stuck in there pretty good). It's a solid bolt carrier group, with a few upgrades over a true mil-spec bolt carrier group. In my opinion this is less than ideal. bolt carrier group could lack enough force (generated by the expansion of the action spring) to feed, chamber, or lock the bolt . Without going into too much detail, when you fire your rifle, gas moves from the barrel up through the gas tube and back into the gas key. !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. The bolt carrier group is responsible for the following 4 critical steps. Method 1: Change Your Buffer Spring. This over-travel condition allows the 9MM AR Bolt to travel too fast in the forward direction causing premature failure of the bolt catch. AR 10 Charging Handles Review. October 22, 2019 2:57 am Reply Gary. I have to tap it on the ground to get the buffer spring to push the . Which in turn fires the bullet. 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. A $34.95 value! The purpose of this page is to aid you with 9MM AR troubleshooting. Create an account to follow your favorite communities and start taking part in conversations. . Powered by Invision Community, New Changes for The Politicial Asylum forum. 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. I did the mortar maneuver. Keep reading below. Car parking multiplayer gearbox tips. You may have to lightly push on the FA, but you shouldn't have to jam on it to get into go into battery. It cleared fine. Perhaps it's the zoomed pic but that bcg looks like crap. 1,592. Yes. Insert the Cam Pin through the Bolt Carrier opening and into the Bolt so that the flat bar on top of the Cam Pin is inline with the Bolt Carrier. The two bolts Sharps supplied were in DLC (Black) and NiB-X Silver coating and boast the following manufacturer specs. Thanks for the replies. stock trigger has a heavy pull and even heavier . So I tried to lube it up but its still very rough and feels like there is a lot of friction going on. Gas tube alignment could be the culprit. So far the drum stuff hasnt been that bad, course having Mike around to post updates & videos helped a ton. It'll likely serve you well afterwards. AR-9 9MM BOLT CARRIER GROUP - GLOCK AND COLT BCG - WMD NiB-X NICKEL BORON. BCA AR-15 Bolt Carrier Group Black Nitride. Pushed on it and heard it click. Check JP Enterprise but I'm thinking colt bcg have a proprietary cut to them?? 26 items . Now that the kinks seem to be worked out, I'm hoping to test the reliability of this nickel boron bolt to see if it really runs dirty as all the manufacturers claim. Pros: Looks great; Cons: Out of tolerance/no QA; Best Used for: Door . The Bolt Carrier Group (BCG) on an AR-15 is the collection of components of the rifle or pistol that performs the following functions when the trigger is pulled: Fires the cartridge. $289.95. Aero Precision 6.5 Grendel/6mm ARC Bolt Carrier Group, Complete - Black Nitride AR15/M16 Full Auto BCG. Create an account to follow your favorite communities and start taking part in conversations. View More. The mass & inertia of the bolt carrier group will pop the stuck round out of the chamber. It is stuck! One new winner* is announced every week! thanks for your reply. AR15 5.56 / .223 Nitrided BCG Complete Bolt Carrier Group. $249.00 On sale: $217.95 In Stock. Now the bolt/carrier is sticking like crazy. COMPANY. $ 73.99 - $ 75.99. Drop the firing pin in the opposite end of the bolt carrier, then press it down to ensure it seals properly. If done correctly it will not damage the rifle and is a much safer way to get a stubborn round out. The carrier then moves forward creating a double feed and jamming said casing into the outside edge of the feed ramp (I think?). Sale. You can leave almost the entire thing dry, as most of it doesn't touch anything. With both pins out, I can separate the halves about half an inch, but the rear takedown lug? You want reliable function, be reliable and clean it after you shoot it and keep it in top working condition. A thorough cleaning followed by the liberal application of lube is in order. BCG stuck No, when the BCG moves rearward, the bolt is held by the receiver extension. PSA 5.56 Phosphate MPI Full-Auto Bolt Carrier Group . Note: When discussing the 9MM AR the assumption is made that the shooter is utilizing a carbine length buffer system. Perhaps a tad catawampus or debris. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. The gas key is staked on both sides of both bolts. I use mid range reloads so I couldn't figure why it would be jammed.. Had the gun been cleaned before it was put up? This unfortunately allows the 9MM bolt to travel further down the buffer tube than necessary. !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!! If he only fires his own reloads . Taking the lower off didn't change a thing, so the problem is definitely limited to the upper. 4 (100%) "Mortar" it. Installed the safe door with 4 guys lifting it up as it weighs 500 pounds. (another big mistake) and the bolt and carrier is now stuck in the upper receiver. Add to Wish List Add to Compare. You are correct sir! Also it caused other issues, like the bolt over-running the bolt catch on the last round. Use common sense. Well, when I had it apart earlier the buffer spring was staying in the buffer tube. This will allow your AR15 upper to pivot forward from your . Batch MPI and HPT tested. Strangely enough, the problem BCG works perfectly in my personal AR. The apparent problem is that the "problem" BCG is wider than standard and your "problem" rifle's upper (and probably lower receiver extension) is slightly smaller than average. Gun looks really dirty and dry as a popcorn fart to me, clean and lube it. 276-BCG15 | Bear Creek Arsenal. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Do this a couple times and it should free your BCG up. http://www.bushmaster.com/anatomy_bushmaster.asp. My personal preference is the Hahn and Heavy Buffers offerings. Is it ok to tap on the charging handle with a rubber mallet? I put another fifty rounds or so through the gun. I was using Federal .223 FMJ rounds. It is surprising sometimes how stiff a new BCG can be. 1. SALE PRICE: $137.75. Picture of chamber and bolt face would help. Running it suppressed most of the time with minimal lube it still runs well. But there are A LOT of choices. Or you can try to force it forward from underneath the magwell. Toggle menu. Take a pic of the rear of the bolt lugs. I have had military rifles where the part of the forward assist that actually contacts the bolt breaks and locks the bolt forward. You have significant carrier movement prior to any unlocking/bolt rotation. Arm or Ally AR15 / M16 5.56 NATO Bolt Carrier Group - Black Nitride. If the bolt carrier from the problem rifle binds in the non-problem rifle, the bolt carrier from the problem rifle might actually be the problem. 6.5 Grendel Bolt Carrier Group . You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers. Absolutely. If the BCG is that far back it shouldn't be too hung up. I would double check this. Step One: Complete AR15 Disassembly - Bolt Carrier Group. Thanks so much for your helpful reply. If your gonna let your gun get that dirty you must run it wet. Compete against real players in the multiplayer racing. The bcg should come right back. 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 . Quote. Pull the bolt back and rotate the cam pin 90-degrees. Bash on the forward assist? 16" 5.56 / .223 1x7 GOVERNMENT 4150 CrMoV MELONITE NITRIDE BARREL - MID-LENGTH GAS. I run 'em wet (not stupid wet) anyhow. Because the BCG is half an inch or so into the buffer tube, I can't separate the two halves. AR15 5.56 Bolt Assembly Nickel Boron $ 109.95 $ 74.95 SALE. Tensile strengths of 1550-1600 mpa, or 220,000-235,000 psi. Free Account glitch cars Please share with your friends . I'd have a close look at the chamber face. There was a live, unfired round in the chamber - scary. The cause could be the result of one or more of the following: Excess accumulation of dirt or fouling in and around the bolt and . See if they are willing to fix it to make it right (don't know if he guarantees his work). BROWNELLS - AR15 BOLT CARRIER GROUP 5.56X45MM NITRIDE MP (5.0) $167.99. No wonder it is locking up. 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. The bolt carrier group is the heart of any AR10/AR15/M4/M16 type rifle, carbine or AR pistol. ? This should be enough thrust of inertia to get the bolt carrier assembly to come forward. Get rid of them. Its an American Tactical upper and an 80% built lower. If you have another BCG I'd try it. Was in a hurry putting my MPX back together after cleaning and put the bolt carrier group into the upper receiver backwards. 406-304-8183 Login or Sign Up; 0. This is not a break in issue. B2-K630-A001-0P. Or stuck on an empty chamber? It will chamber a round alright, but takes a great amount of force to pull it back manually. Colt AR6951 Bolt Catch is the only dedicated 9MM Bolt Catch that I am familiar with.and know of. Otherwise it was three short groups with three to five minutes in between. aren't particularly expensive and are generally between $50 and $100 for a complete LPK inclusive of fire control . Any ideas? Then point the muzzle straight up and rap the butt sharply on the ground. White Label Armory 5.56 Bolt Carrier Group Billet Extractor Blue PVD M16 AR15 BCG . but i thought i would post this as a detailed guide. "Rack" pull the charging handle of your AR-15 back swiftly with ample force and release it . I also tried forcing the BCG forward from the mag well, but again, seized hard and can't get the bolt to slide back into the BCG. Before you do any removing of anything, or hacksawing please do the following. Next. Short and to-the-point Video: AR-15 Bolt Carrier Group Disassembly (BCG) and Reassembly is really easy when you know what to do. 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. Answer (1 of 8): Is an AR-15 .300 AAC Blackout bolt carrier group the same as a .223/5.56 BCG? "After attempting this a few times I called another guy at the range over and we pulled from two ends of the gun, me from the barrel and him from the charging handle.". . Put your pins back in and smack the buttstock on the ground. 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. I'm not sure. EDIT: FIXED! On select areas, especially during warm weather, I prefer grease though if in a sandy environment I'd stick with oil. The bolt should be centered properly. Solution Part Three I have learned over the years that all AR-15 recoil springs are not created equal. You might want to pick up a cheap DS arms BCG just to have on hand. I bought one with a nickel boron bcg thinking that I wouldn't run into too many issues with cleaning, dirty loads, etc. Specs: Mil-spec Carpenter No. All Rights Reserved. 7.62 x 39mm Caliber Bolt Assembly Nitride $ 99.95 $ 69.95 SALE. Or am I stuck with replacing the entire BCG to get an M16 bolt carrier? (Ok, i admit, it was a CMMG bargain bin). I did not see any problem with the lower. ORION TRAINING GROUP; AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. It's nice to know whether or not it's live, even though it is going to be treated like it is anyways. Prime Premium AR15 Charging Handle $ 29.95 $ 19.95 SALE. buffer tube), or threaded tail of the lower receiver where the receiver extension screws in. 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. If you are looking for a bolt carrier group for sale, Surplus Ammo has what you need. It might not be square. The BCG moves freely already. Toolcraft Black Nitride .224 Valkyrie/6.8 SPC Bolt Carrier Group (AR15/M16)-MPI Tested This item is currently on order MSRP: $149.95 . 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 issue is the bolt won't move inside the BCG, and therefore won't go into battery enough for the BCG to clear the buffer tube enough to separate the upper and lower. *Must have a registered ARFCOM account to win. If the bolt carrier from the problem rifle works fine in the non-problem rifle, but the bolt carrier from the non-problem rifle binds in the problem rifle, we've eliminated the bolt carrier as the problem. If you have any experience to offer send us a message. check out the. CMMG and Rock River Arms also offer 9MM AR specific bolt catches. What you are going to have to do is "mortar" it. Best I can figure, it found its way into a magazine, then miraculously fully fed into the firing pin channel. Perhaps at least a little between the carrier and bolt, as well as a tiny bit in the star chamber near the lugs will help, at least until the rifle settles in a bit. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. Out of stock. Grabbing onto and ejecting the spent casing from the fired round. Put a heavy lube application on the 4 rails, on the gas rings, on the cam pin, the forward and rear facing lugs of the bolt, a smidgen on the firing pin, and one drop of oil worked into the ejector. Took it back to the range today and ran about 15 rounds through it and it misfired. Add to Wish List Add to Compare. It is comprised of the bolt, carrier, extractor, ejector, gas key, gas rings, cam pin, firing [in, and the firing pin retaining pin. Oh and yes i know this is referred to as "mortaring". There might still be a problem with the problem rifle's lower receiver extension (a.k.a.