bolt carrier group getting stuck

LANTAC E-BCG Nickel Boron Enhanced Bolt Carrier Group EBCG (2) Sale. This will allow your AR15 upper to pivot forward from your . That would meen that chamber has never seen a steel case . I tried using the forward assist to seat it. Usually they are older rifles and have probably seen more abuse than yours. The bolt carrier group is the heart of any AR10/AR15/M4/M16 type rifle, carbine or AR pistol. Contact who you purchased it from. no accidental firing. A $34.95 value! The longer buffers reduce the amount of travel available to the bolt. 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. Take off the stock, loosen the castle nut, and unscrew the buffer tube. Press J to jump to the feed. ? I can take out the pins and the upper an lower come apart a bit, but I can't completely remove them. Prime Premium AR15 Charging Handle $ 29.95 $ 19.95 SALE. Well, when I had it apart earlier the buffer spring was staying in the buffer tube. Resetting the hammer in the lower receiver. 6.5 Type II Grendel Nitride Bolt Assembly $ 99.95 $ 69.95 SALE. Faxon 5.56/300 BLK Gunner Light Weight Bolt Carrier Group Nitride M16 Bolt Carrier Group AR15 BCG. Anyway shot it Monday ran 60 rounds through it no problem. 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. Tensile strengths of 1550-1600 mpa, or 220,000-235,000 psi. Picture of chamber and bolt face would help. Sharps Xtreme Performance Bolt Carrier Group (Successor to the Relia-bolt) stag ambi charging handle faxon 14.5 midlength pencil barrel Geissele MK8 SLR Sentry 7 Gemtech Trek . I had a loose primer get into the cam slot once. Gas tube alignment could be the culprit. This slightly wears in the parts and gas rings and makes the initial rounds chamber and eject easier. If you didn't spray it down with brake cleaner or something prior to snapping the photo, that thing is beyond dry looking to me. Press question mark to learn the rest of the keyboard shortcuts. aren't particularly expensive and are generally between $50 and $100 for a complete LPK inclusive of fire control . No wonder it is locking up. 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. 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. Charpy C-Notch. One new winner* is announced every week! Have you pushed the front take-down pin out also? It can then pop up and wedge, typically in the buffer tube but sometimes in the receiver. According to my brother, our Vietnam veteran, "mortaring" was unofficially adopted during fire fights when someone was shooting at you and your life was on the line. You might want to pick up a cheap DS arms BCG just to have on hand. Me being relatively new to the AK, but not new to disassembly/reassembly of mechanical things, I can tell you don't force anything. The bolt should be centered properly. Fortunately the solution and prevention are pretty easy. 20 BA 6ARC barrel, 16 SLR Handguard (mlok), Odin Works 6ARC BCG, TriggerTech AR-15 Trigger. AR 10 Charging Handles Review. Perfect for your next .308/.243/6.5 Creedmoor Rear Charging AR-10 build. B2-K630-A001-0P. BCA's Bolt carrier groups are MPI inspected. View Details Aero Precision AR-15 PRO Series Bolt Carrier Group (BCG) - Black Nitride . 2. Is it difficult to push the rear takedown pin in? Free open world with real gas stations and car services. Once again look at the chart below and compare the Colt and RRA buffers to the other manufacturers listed. Do I need to remove the buttstock? Caliber / Gauge: .308 / 6.5 Creedmoor / .243 Winchester / .22-250. The method is pretty much specific to the M16/AR-15 platform, as most other semi or full auto military rifles have a steel bolt handle attached to the operating rod that can be beat open with a stick of wood, or kicked open with a combat boot heel. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. BCG stuck No, when the BCG moves rearward, the bolt is held by the receiver extension. 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. The BCG is stuck pretty far back in the buffer tube. When i work the bolt via the charging handle, the bolt will get stuck in the buffer tube. The AR-15 bolt carrier group contains vital components for proper functioning of your firearm. Take it apart and clean it real good then oil it back up and cycle it several times. Was in a hurry putting my MPX back together after cleaning and put the bolt carrier group into the upper receiver backwards. Was the bolt stuck with a round in the chamber? I just bought a fully assembled upper from a guy who builds guns locally. Do this a couple times and it should free your BCG up. Are you sure it's the bolt binding, and it's not bound on the gas tube? November 14, 2010 in The Beginners AR15 Armory. Grabbing onto a new round from the magazine and chambering it. WMD Guns AR15 Bolt Carrier Group - NiB-X (Faceted) $164.00. Last edited by Redbeardsong; 01-14-14 at 22:53 . They also drilled the gas port out a little larger since I am using a low mass carrier and adjustable gas block. Than, lift the rifle up about 1 foot or so and bring it onto the ground with considerable force. With both pins out, I can separate the halves about half an inch, but the rear takedown lug? Put your pins back in and smack the buttstock on the ground. One new winner* is announced every week! Issue is that bolt won't rotate/slide back inside bolt carrier. Something wedged in there is your culprit and knowing what gives you an idea of what you are up against. The charging handle would not pull back to eject the live round in the chamber. The Lower Parts Kit for AM-15 includes the following: Bolt Catch . 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. . It's a solid bolt carrier group, with a few upgrades over a true mil-spec bolt carrier group. Was able to unstick the bolt carrier and the other good news is no round in the chamber. Ok, I am a total noobie. Been playing this a lot with my teenage son, and having a blast. Lo and behold, I loaded my first mag with three rounds to zero the gun in and, "click." Failure to fire. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. View More. Get rid of fancy BCG sand use a standard one. 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. In a quick powerful motion shove the rifle forward and hang on causing it to come to a sudden stop. Turn the Bolt, aligning the larger opening with the Bolt Carrier opening just below the Carrier Key. Shop with us and get the best bolt carrier group on the market today! (never heard this term before today), but slamming the butt into the ground to get the bolt carrier unstuck seems like something to be done only when other people are shooting at you! What you are going to have to do is "mortar" it. 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. 276-BCG15 | Bear Creek Arsenal. Best I can figure, it found its way into a magazine, then miraculously fully fed into the firing pin channel. When I manually pull the carrier all the way back (past the trigger "friction"), it sounds a . ARFCOM is full of answers, mine is just one consideration. 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. 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. It cleared fine. Add to Wish List Add to Compare. In my opinion this is less than ideal. $154.99 On sale: $144.14 In Stock. In stock QUICK ADD . When the thickness of five stacked quarters .345 is added to the length of the Colt 9mm buffer we conclude our 9mm buffer needs to be approximately 3.645 long! The carrier then moves forward creating a double feed and jamming said casing into the outside edge of the feed ramp (I think?). There might still be a problem with the problem rifle's lower receiver extension (a.k.a. Well, despite my shoulder, I went to the range yesterday. But there are A LOT of choices. I have never seen a carrier look like yours. Assuming that your upper is still attached to your lower start by making sure your bolt is in battery and then push the rear pin (called the takedown pin) till it clicks and is held captive on the right side of the receiver. 6.5 Grendel Bolt Carrier Group . Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. Disassemble and clean/lube the sharps BCG. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. M16 Diamond (DLC) Bolt Carrier Group Out of stock SALE. Maybe a loose Gas Key holding it up? When you put the upper from the problem upper on the non-problem lower, does the BCG from the problem rifle bind in the buffer of the non-problem rifle? Then point the muzzle straight up and rap the butt sharply on the ground. ORION TRAINING GROUP; The bolt carrier and Bolt would not fully seat. I have yet to introduce this rifle to more rapid sequences of fire. It is surprising sometimes how stiff a new BCG can be. If he only fires his own reloads . This is odd. I have a BCM carrier with old FN bolt that I treat about the same and it runs well without much lube. I have a Spike's NiB BCG that is well worn (second set of gas rings, extractor spring, o ring, and insert) and I am not meticulous when cleaning. I think I broke my gun. Step One: Complete AR15 Disassembly - Bolt Carrier Group. AR15 5.56 / .223 Nitrided BCG Complete Bolt Carrier Group. You can also check: Best Budget AR 10 Barrels. 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. Also, there are springs and pins that work with the . Specs: Mil-spec Carpenter No. (What can cause a bolt to get stuck?) If you are looking for a bolt carrier group for sale, Surplus Ammo has what you need. Is this a complete lower (hammer, trigger installed)? The key moves this gas into the bolt carrier group; this unlocks the BCG and pushes . Carpenter . Method 1: Change Your Buffer Spring. Is it ok to tap on the charging handle with a rubber mallet? Pros: Looks great; Cons: Out of tolerance/no QA; Best Used for: Door . Does the BCG move freely into the upper without the lower? The AR-15 bolt carrier group, or BCG, is a critical and often misunderstood piece of the AR-15/M16 upper receiver. 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. Only problem is now the bolt carrier is stuck back all the way and won't go forward. How new is everything, could be just tight because of being new parts needing to work into each other, or possible the bolt was not rotating correctly, make sure and take the bolt control group apart and check everything. Arm or Ally AR15 / M16 5.56 NATO Bolt Carrier Group - Black Nitride. My account; Checkout; GEAR UP! and responded with an answer, because my bolt (well entire carrier really) did in fact get stuck in the open position due to the casing/ejection jam. (with a live round in the chamberLOL. If the upper had been used/fired before and they used steel cased ammo . I currently have the lower fully assembled, upper receiver, bolt carrier group, and charging handle. Probably 2004 or older. It is not stuck in battery. I know it seems a bit harsh, but it works, it's what the military has been doing for years. 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. You are correct sir! Grabbing onto and ejecting the spent casing from the fired round. I am beyond OP's return dates. 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. Short and to-the-point Video: AR-15 Bolt Carrier Group Disassembly (BCG) and Reassembly is really easy when you know what to do. Just get one of the Brownells 308AR Bolt Carrier Groups, if you're stuck. Stuck with this junk unless I can convince Faxon to fix it. This over-travel condition allows the 9MM AR Bolt to travel too fast in the forward direction causing premature failure of the bolt catch. If it has a round chambered point the barrel in a safe direction. Try the Mortar thunk first, I forgot about that. Or, You might have a burst shell casing that's hung up on the Bolt. Solution Part One The Colt 9mm buffer is 3.300 long. A call to armalite confirmed this. It may not display this or other websites correctly. Reliable AR 10 Rifles. PSA 5.56 Premium Full Auto Bolt Carrier Group with Logo - 8779 . COMPANY. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Car parking multiplayer gearbox tips. Also have you tried to lightly let the charging handle go forward just to see how easy it is for a round to go into battery? Answer (1 of 8): Is an AR-15 .300 AAC Blackout bolt carrier group the same as a .223/5.56 BCG? 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. White Label Armory 5.56 Bolt Carrier Group Billet Extractor Blue PVD M16 AR15 BCG . For a better experience, please enable JavaScript in your browser before proceeding. Wanted to share my fallout vault door. AR-308 Accuracy problems. Not really a good habbit to be sticking stuff in there from the muzzle, but I'd make an exception. Get rid of them. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. Without question the biggest malfunction 9MM AR shooters experience is a broken bolt stop, broken bolt catch. I run 'em wet (not stupid wet) anyhow. I use mostly Mobil 1 though about anything is better than nothing. [ARCHIVED THREAD] - Bolt carrier stuck in buffer tube. S197 Gunny Sergeant Full Member Minuteman . When firing the bolt will get stuck in the chamber, in order to eject the casing I will have to grab the charging handle and bump the buttstock to dislodge it . Create an account to follow your favorite communities and start taking part in conversations. View Details Angstadt Arms 9mm Bolt Carrier Assembly So far the drum stuff hasnt been that bad, course having Mike around to post updates & videos helped a ton. Well it sounds like the bolt is not wanting to rotate and unlock from the chamber. CONFIRM CANCEL. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. DrBob, What you are going to have to do is "mortar" it. SALE PRICE: $139.99. I never thought it was going to open! Its always nice to exclude thing as being the problem . With all this great advice, let us know how it goes. Create an account to follow your favorite communities and start taking part in conversations. Gun looks really dirty and dry as a popcorn fart to me, clean and lube it. Add to Wish List Add to Compare. You want reliable function, be reliable and clean it after you shoot it and keep it in top working condition. ATTN: Here is the link to a new higher quality and more informative video I made showing this technique and explaining what I think causes it, and how to kee. Bolt Finish: Parkerized. "We will never sleep, 'cause sleep is for the weak. Failure to Feed, Chamber or lock (Click image to view larger image) Probable Causes. By Also the charging handle lever, rails, and CH race in the upper. Running it suppressed most of the time with minimal lube it still runs well. I read the title (What can cause a bolt to get stuck?) Out of stock. Short and to-the-point Video: AR-15 Bolt Carrier Group Disassembly (BCG) and Reassembly is really easy when you know what to do. Because it's a nickel boron bcg, I was hoping this would be the magic solution that prevented me from having to lube anything. Your rifle is dry as a bone. AT3 AR-15 Bolt Carrier Group - 5.56 NATO/.300 Blackout - Nickel Boron. If done correctly it will not damage the rifle and is a much safer way to get a stubborn round out. Now that your bolt is back so far, is it now stuck in the buffer? http://www.bushmaster.com/anatomy_bushmaster.asp. Could be a combination of tight tolerances and baked on carbon. I took out the XPB BCG and put my original BCG back in and it runs smooth after that. High-quality AR15 Bolt Carrier Group (BCG) at Affordable Prices. 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. October 18, 2019 1:01 pm Reply tangofoxtrot. Next time a cartridge gets stuck in the chamber and will not eject learn how to "mortar" the rifle rather than have someone else hold the barrel. Sale. *Must have a registered ARFCOM account to win. . Copyright 1996-2023 AR15.COM LLC. I didn't have any issues with the bolt/bullet sticking and didn't have to practice my mortaring technique. When I let the BCG go forward, won't go into battery enough for the BCG to clear the buffer tube. That stupid bolt may be getting jammed into the chamber and locking it up. Re: help!!!! 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. A different 9MM buffer is needed and possibly a higher quality buffer spring. CMMG and Rock River Arms also offer 9MM AR specific bolt catches. Try this: swap BCGs, not uppers. Return the BCGs to their original rifle and swap the charging handles. $ 73.99 - $ 75.99. Stupid failure on my part, although I don't know that it would have changed anything. usmc to&e website; who makes solgw barrels. Check it out at this link:https://kydexowbholsters.com/firearms-legal-protection-costFirearms Legal Protection provides uncapped legal defense for members who use a firearm (or any legal weapon) in self-defense or the defense of others.If you found this video helpful and you would like to support the channel, please buy me a coffee! If that fails tap the Handle. This energy and velocity combined with the over travel condition of the bolt cause premature failure of the 9MM AR Bolt Catch. Sometimes if the cotter pin is put in wrong it can catch. Pull the bolt back and rotate the cam pin 90-degrees. most likely the cheap amazon prime sights thats killing your gun. Soaking wet. This is not a break in issue. Bet-your-life dependability is a non-negotiable prerequisite. I tried cycling it a few times and it never would seat. Now the bolt/carrier is sticking like crazy. 16" 5.56 / .223 1x7 GOVERNMENT 4150 CrMoV MELONITE NITRIDE BARREL - MID-LENGTH GAS. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. It'll likely serve you well afterwards. BCA AR-15 Bolt Carrier Group Black Nitride. 227-GTBCG | Guntec. Right to Bear Arms and Supply proudly sells these core components from top-of-the-line brand names, including Anderson Manufacturing, Rock River Arms, Spike's Tactical and WMD Guns. i have a few thousand rounds on mine and no issues or deformation. I was using Federal .223 FMJ rounds. BROWNELLS - AR15 BOLT CARRIER GROUP 5.56X45MM NITRIDE MP (5.0) $167.99. JavaScript is disabled. Took a few whacks. . AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. You got to lube these rifles . Platform: AR-10. Sounds like your buffer tube may not be threaded in far enough to keep the retainer pin from popping up, causing it to catch the bolt carrier when it goes past it. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. here is the album of photos, let me know if there are any others i should include: http://imgur.com/gallery/ezQxC. Suggestions? Do a function check. Realized it when trying to join upper and lower receiver. I do, however, keep the barrel extension and chamber relatively clean. Before replacing the upper, do one more test--swap both the charging handles and the BCGs of the rifles. Today, I was taking it out, and I could not for the life of me get the bolt to unlock. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Well, I am sitting in front of the tv anyway doing nothing. check out the. Reason Two The blow back nature of the 9MM AR recoil system provides the 9MM bolt with some serious energy and velocity. $162.54. Add to Wish List Add to Compare. SALE PRICE: $89.99. I have to tap it on the ground to get the buffer spring to push the . Clean the friggin' thing and lube it. Before you do any removing of anything, or hacksawing please do the following. Take the gun back to the builder and see what he/she says about the problem. Packaged 7.62x39 Bolt Carrier Group Assembly B2-K630-DA00-0P Bolt Carrier Group Assy., 5.56 NATO, M16 Profile, Nitride Bolt & Carrier, RF85 Treated Choose wisely with AT3 Tactical. Back to old site If there is anything in your cart, it will not be brought over to the old site. Strangely enough, the problem BCG works perfectly in my personal AR. It houses your firing pin and extractor, which are the key components that make your firearm fire and cycle correctly. Don't know if that's what was needed or not, but as I said, it worked fine yesterday. If that is indeed the case and he only fired a few rounds to test , carbon build up in the chamber was never the problem . All Rights Reserved. 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. This combo is a gen 2 right side charging upper and BCG (patent pending), it includes an AR15 bolt carrier group (BCG), a right side charging bolt handle, a threaded receiver plug, and the bear creek arsenal AR 15 right side charging upper . How did you install the barrel? 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 . I have had military rifles where the part of the forward assist that actually contacts the bolt breaks and locks the bolt forward. I pretty much run a magazine, wet th bcg, wet, etc for a couple hundred rounds. The bolt carrier group is complete; before continuing lightly apply your oil/lube across the entire BCG but especially the contact . Its an Anderson Lower, Pre-assembled anderson upper, rear take down goes in like normal, and the BCG does go freely into the upper. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. Put the gun back together. Press J to jump to the feed. Taking the lower off didn't change a thing, so the problem is definitely limited to the upper. It is not stuck in battery. Which in turn fires the bullet. In Stock. It was stuck HARD. That's really dirty. Did you run polymer coated ammo by any chance? 26 items . !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!! AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Ejects the spent cartridge after firing. If your bolt is stuck and you've shot more than 1000 rounds, the culprit might be your buffer spring. Its an American Tactical upper and an 80% built lower. And most people don't know how to lube an AR bolt carrier group. 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. As others stated, give it a good cleaning and lube well to include lugs and barrel extension. Page. 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. Note: When discussing the 9MM AR the assumption is made that the shooter is utilizing a carbine length buffer system. Does a normal at carrier work good in it. Prior to the introduction of the plastic-tipped buffer the carrier group would ricochet off the back of the receiver extension, which would increase residual carrier KE and make it more likely to bounce during counter-recoil. Otherwise it was three short groups with three to five minutes in between. 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. Carrier looks dirty as he'll. Y en este artculo te lo ensearemos a cmo hacerlo. I also oil liberally for the first 500 or so rounds. There is a couple reasons for this common issue of a broken bolt stop, broken bolt catch with the 9MM AR platform. 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. So I was shooting my AR last week, and it was functioning fine. Pull the Bolt back to extend it and turn the Cam Pin 90 degrees. BCA M16 Cut 5. Here is a video on how to do it. While pulling the charging handle, drive the buttstock into the ground being careful not to bend the charging handle. This full auto carrier is heat treated and precision machined. I believe my recoil spring is binding inside the bold carrier when I pull the charging handle all the way to the rear. Do this a couple times and it should free your BCG up. 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. About Women's Health Newsletter Customer Care Advertise Media Kit Other Hearst Subscriptions Subscribe Give a Gift. The BCG is all the way back. 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 . If you have a standard stock, you can remove the upper buttplate screw and insert a small rod and tap the carrier forward. Drop the firing pin in the opposite end of the bolt carrier, then press it down to ensure it seals properly. You could also look at the forward assist. 56 Bolt Carrier Group 158 Carpenter SP/HPT/MPI | Sons Of Liberty Gun Works BCG. Oh and yes i know this is referred to as "mortaring". ATTN: Here is the link to a new higher quality and more informative video I made showing this technique and explaining what I think causes it, and how to keep the issue from happening again.https://youtu.be/S_wLVeBOJgII show how to use the mortar technique and simulate how my AR-15 bcg locked up with a round chambered and a bolt carrier group that wouldn't budge.

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