And now I hope to answer some of yours! This article was a great read if you're a newbie unfortunately this article forgot to actually mention some of the best BCG's on the market. Posted: 2/8/2020 10:19:24 AM EST I have no experience with SOLGW, but I have a few BCM uppers. Check JP Enterprise but I'm thinking colt bcg have a proprietary cut to them?? Stripped Upper Receivers forged or billet for AR-15 and AR-10 platform. Before you had to go with different materials for the carrier like aluminum…which turned out to not be a great idea.  Aluminum carrier rubbing an aluminum receiver led to the carriers being used up in a few thousand rounds. We’ve built dozens of AR’s and we’ll cover all the best AR-15 upgrades such as handguards, triggers, BCGs, gas blocks, and more. Sionics is 1 in 8 and BCM is 1 in 7. But my question is how is a Titanium one not the best choice easily? Obviously, there is the bolt itself, along with its own set of components. What brand is the full auto in the comparison that you did? I’m building an ‘AR ‘ 10 , it’s the first real build that I’ve committed to . And I was 100% dead set on a BCM Recce 16 at first. Everything is $20+ more than it was. On the topic of recoil, I get the idea of 'less mass moving might = less felt recoil', but what about less mass in the BCG to absorb the recoil? what makes them better than Colt,Bcm because they might be easier to clean? My next rifle purchase, https://www.ar15.com/forums/general/DPMS-is-gone-but-not-forgotten-Ask-a-former-employee-anything-/5-2293793/. Can you provide some input? Any suggestions? IMO, A bcg i purchased a while back that have had zero issues with is sharps rifle co with its reliabolt. AR15, M16, M4, BCM Barrel Assemblies. It weighs in a little lighter than the Faxon at 8.2 oz probably due to the one additional cut. I'd go BCM. Any use of this content without express written consent is prohibited. I am a big fan of BCM, colt and SOLGW. I'm aware of Shmid, they're stuff is good. SOLGW Bolt Carrier Group $149.99. Lastly, the lightweight/Low Mass BCG is a built for ultra-light competition guns that require a number of other parts in order for it to function reliably. Another recent addition from the makers of the most hi-tech AR-15 muzzle brake…one that’s 3D printed from Inconel (think rocket ship engines). Usually it’s printed onto the bolt (either as MP or MPI).  But not all the time. There is no best bcg.Buy one with a great reputation,for me thats Colt.I have Lmt,Psa,Lwrc they all work but Colt is inspected,tested and in spec.THE MOST TESTED. My primary is a BCM but I'm open to picking up a SOLGW, especially after seeing Mike's activism in the recent weeks. Get Our Top Shooting Drills and Zeroing Targets ($47 value - but FREE for a limited time). Learn all the important stuff about handguns...with none of the attitude. Its great NiB will run fine with a small amount of lube I recommend using normal amount of lube. Any well made BCG will be good to go. All the “high pressure” bolts like JP Enterprises are made with 9310 and state it’s stronger than C158, which is just mil-spec (the minimum standard). Palmetto State Armory has a large selection of bolt carrier groups for your AR-15 rifle or pistol. I LOL’d at the Magnetic Particle tested “bolt” picture. Author’s favorite lower receiver from SOLGW, the “Soul Snatcher”. Nothing much to say except it’s mil-spec everything and has a great reputation. They may be a little bit pricey but you get what you pay for. What kind of BCG do you run?  There’s so many BCGs out there so let us know what we missed.  And check out the rest of our Best AR-15 Upgrades. Mil-spec means phosphate coated and is matte and a little bumpy.  Which does its job but does requires more cleaning than newer coatings. 3.) They're both great companies. LMT Enhanced Bolt Carrier and Bolt! Nope, SA and FA BCGs have the same dimensions and will fit in any standard AR-15 upper! Mil-spec doesn’t mean greatest ever, or worst, it’s just in spec to a military contract.  Here’s some of the important bits: See that “high pressure tested” and “magnetic particle inspected” above?  That means each bolt is individually tested at a proof load. Learn More. The carrier itself is a very low wear part, the only part that really takes any wear is the cam path itself and that isn't enough to become a problem very often. Been throw 4 barrels, but the BCG looks near new. It has the lubricity of the NiB, it is cheaper than NiB and it cleans up every bit as easy. Colt, bcm, solgw. But if mil-spec is the name of the game…get the BCM. Save a little with their Nitride…but might as well go big or go home. I am reading thru this article on bolt carrier groups. Please check the headspace on every build. If you ask most people online what’s their go-to BCG…the vast majority is going to be BCM’s M16 BCG. Nitrided instead of chrome lined barrel is a deal killer for me, especially for the price. should ban this idiot from writing anything and only let professionals with experience and actual knowledge speak. SOLGW The Quick Ambi Safety 90 … Not much of a fan of LMT anymore. I have put them in all of my AR platforms in the past 2 years. I'd trust them 100%, nd I say that as someone who has no issue with BCM and has used/is using a number of their products. There are plenty of BCG’s that … I do like them in terms of increased lubricity and ease of cleanup.  Plus it the silver color pops out in your upper receiver. Their bolt uses 9310 steel but again…it is likely never going to matter. Brownells Nitride M16 BCG gives you the added benefit of the Nitride finish which makes it slicker and easier to clean. Messages: 188 Likes Received: 103. I've heard lots of good things about Radian and it sounds like you're a fan as well? This. I’m a BCM guy, I’ve used a ton, if not all of their shit. If it doesn’t say in the description…it probably is only batch tested.  And you never know if a batch is 10 or 1000 BCGs. This is where you can go stupid cheap on builds…that still work reliably (PSA 3 AR-15s Review). If you’re looking for something mil-spec and a little upgraded with a Nitride coating…get the Rainier. Terms of Service apply. Search them up on M4Carbine.net or P&S. A few definitely deserve to he there, but not all. My current go-to for competition shooting is the RCA BCG but costs a pretty penny since the carrier is Titanium. SIONICS Bolt Carrier Group (HP/MPI) - Auto Fully Assembled Complete Bolt Carrier Group that is HP/MPI Tested - Auto Version - Machined to USGI Specifications. Main thing is that it looks great and is performing great so far too.  With that comes a Gucci price though…. All Colt makes these days are the extractors, The pony is a mere shadow of once greatness.. Are the Phosphate bolts stronger than both NiB & TiN? I'd like to purchase a quality bolt carrier without a bolt. 2.) Toolcraft vs Microbest I have a question about people's seeming preference for Toolcraft. Want something in the middle…that’s mil-spec AND Nitride coated? Also NiB has less friction does not mean it does not need lube. Son's Of Liberty Gun Works specializes in custom M4 and MK 10 Rifles, alongside a wide range of gun components and products. If you haven’t tried the Black Rain BCG, you are missing out on the smoothest running BCG on the market today. The weight saving is great if you're trying to tune the rifle, but it does require tuning. I personally believe, that while the Fail Zero is a good product, it is not on level with a BCM, Daniel Defense, Colt, or SOLGW (meaning, it is not a Mil-Spec BCG, and is not assembled or made to Mil-Spec tolerances. All the others take a regular mil spec bcg and coat it. Let’s just start with our editor’s pick for a branded mil-spec BCG. The BCG's above are all great options, but the bolt itself is a different story. Enjoy our FREE RETURNS. I own a few from cryptic Coatings, Radian, and toolcraft. I just purchased a nitride (sometimes referred to as Melonite) finished BCG. Not sure how he failed to include Toolcraft. We want to ensure that making a return is as easy and hassle-free as possible! Looking for something a little more budget? Rosco's have had issues. I've doubled the price of my first AR (Ruger AR556) with optic and other upgrades. In my research, the WMD was the only nib coated bcg that accounted for the thickness of the coating. BCM has acquired a well-deserved reputation for making very high quality parts. Again, if it’s a duty or self-defense gun…I’d opt for something MPI and HPT tested. We’ve got a dedicated section for the AR-15 here. I'm in the market for a new rifle. Our online reviews speak for themselves. My favorite inexpensive receiver set is the newer Aero Precision M4E1. Had never heard of them. Every quality source I have seen sells only complete BCGs. Can anyone recommend a BCG compatible with an LMT .308? The finish on this bolt carrier group is phosphate. If you look closely you’ll see that the Titanium carrier is black (DLC: diamond like coating) while the bolt is silver (nickel boron). Primary Weapons Systems DI BCG should be #1, followed by POF, BCM #3. She’ll be able to help you out. Something something about the bolt having similarities to a heat sink and making contact with fresh/cooler air. So to say that it’s all mil spec is a kind of buzafication of information . Low-mass or lightweight bolt carrier groups are relatively new on the market.  We also have a whole guide just for choosing a lightweight bolt carrier group, so be sure to check that out if you want to know more. Let’s just start with our editor’s pick for a branded mil-spec BCG. Do you want a chrome lined or nitrided barrel? I'm pretty sure SOLGW will make things right. what is the major difference between a 8620 BCG and a 9310 BCG? JONM78, Aug 14, 2018. A better one might last longer or be a bit more reliable in bad conditions, but that depends on what you currently have Vs. what you might upgrade to. Any reduction in recoil and firearm movement, in general, helps you stay on or get back on target as you fire. Great combo with their builds if you’re buying stuff from them anyways unless you want a different coating. I cringe every time, then pull out my handy dandy gauges and prepare to give a lecture. Well done sirs. I have 100% faith that he will do whatever is in his power to make sure i'm satisfied with his products and service. I think I just replied to the other post you submitted. The Fail Zero is very widely used, and has quite a die-hard fan base. AR15.COM is the world’s largest firearm community and is a gathering place for firearm enthusiasts of all types. For someone who is looking to protect their family and home with an AR but is new to building, it might be wise to go with a factory complete upper until you are up to speed on how to build an AR properly. Check out our beginners guns video course. While Nickel Boron (NiB) is silver and shiny.  And easier to clean. Easiest to clean, best customer service, and no, I'm in no way affiliated with them. Also DLC coating is becoming popular and more common. Antiquated or not, it works and is proven in real world use over decades in harsh conditions. The DLC was chosen for high wear resistance and a low coefficient of friction.  While the Nickel Boron on the 9310 steel bolt was chosen for being easy to clean, having a low coefficient of friction, AND with the benefit of heat dissipation. I’ve helped others and watch a lot of gun Jesus for entertainment mostly but my experience with metal fabrication really grew when I tried to ‘ make’ a machine gun in my garage in my spare time. .223 / 5.56 Bolt Carrier Groups.224 Valkyrie / 6.8 SPC II Bolt Carrier Groups: 6.5 Grendel Bolt Carrier Groups: 7.62x39 Bolt Carrier Groups.458 Socom Bolt Carrier Groups Or am I stuck with replacing the entire BCG to get an M16 bolt carrier? I was surprised they weren't included too. Total weight is 7.87 oz which isn’t that much less than the other steel cut lightweights…but I like having the complete full-auto form factor.  9310 bolt but that is the standard for lightweight builds. So far I can definitely feel the recoil difference between the different settings.  And although there’s only 4 settings so you won’t get down to the perfect setting for your rifle and loads…it’s a great system if you don’t want the hassle of swapping out a gas block. Bolt carrier groups consist of several different parts. To enter the lightweight BCG game…start with the Brownells Steel Lightweight.  But be sure to get the most out of it with an Adjustable Gas Block. So unless you are getting an insane deal on one of these I'd highly recommend skipping all of them and going with a Triarc Track 2.0, Criterion, Larue, Lothar Walther, or at minimum an AR Performance instead.  I soaked up as much information as I could online, at competitions, and from tinkering in my workshop.  The primary advantage of this is to reduce recoil. I've found NiB & TiN BCGs for $100 & $120, respectively. BCM MK2 Upper Receiver. Thanks for sharing. Money was not an issue, but I mention it because it is a fact. I'd be more than happy to continue updating this thread on the repair/troubleshooting process if the OP is interested. Material wise, forged 7075 T6 aluminum that is either anodized or Cerakoted is still one of the best choices to go with when it comes to receivers – they have worked for decades now. If you are looking for a high-quality BCG, look no further. Nitride is black and shiny.  And is easier to clean. Precision tuning is also needed in order for it to run at its best. I of course went with their Titanium Nitride (TiN). Ok guys I love guns and building them and customizing them but I dont know everything about everything by far and now I'm on researching BCG's. So if you don't mind cleaning your current and the recoil isn't a big deal, what other reason is there to change? You do not pay anything extra and your I’m still testing this one out but it might be a good substitute for the RCA one at some decent savings. Â, So, if you’re building a SHTF, zombie-apocalypse-proof, rifle…go with a regular BCG. My newest BCG and one that has a trick up its sleeve…. I used Toolcraft nitride bcg’s for my last 2 builds and have been more than happy with them. We offer BCGs from brands like Palmetto State Armory, PSA Custom, Cryptic Coatings, Toolcraft, and more. Find the best bolt carrier group and learn the ins-and-outs of this crucial AR-15 part. Privacy Policy and Best Low-Mass or Lightweight Bolt Carrier Groups. An adjustable gas block lets you tune the gas so that less force is put into the BCG, stacked on top of less mass coming back at you and you have a reduced recoil impulse that is also not snappy! Â. Odin works have been perfect in one of my grendels. That does it for BCGs…there’s lots to choose from…. Sons of liberty is what bcm was when it started. My WMD NiB BCG been chugging along in my AR pistol for a few thousand rounds…and I’ve only needed to wipe it down with some cleaner and microfiber cloth. And stay in touch with newsletters of our best articles on techniques, guns, & gear. Aren't they the OEM for some of these Mfgrs? 10 Best Online Gun Stores [2021]: New & Used, 5 Best Bedside Gun Safes for Quick Access [Hands-On], 5 Best Pistol Red Dot Sights [Real-Views + Video], 6 Best Home-Defense Tactical Shotguns [Hands-On], Hi, I'm Eric Hung and I got into guns when I was around 25 and started with YouTube videos, scouring forums, and eventually taking a bunch of classes. Combine this with the fact that a titanium BCG is very expensive and it's hard to call it the "best". Nickel Boron (NiB) used to go for a lot more in price but now they’ve stabilized at around the BCM pricepoint. But now you have aggressive weight reducing cuts like with the Faxon Lightweight BCG. Since the bolt carrier group is shot backward towards the shooter the weight of it affects recoil. Of a given product or application of a feature. Titanium doesn't offer as much over steel in this case as one might think. But…the makers have hooked you up with coupon code “PewPew” for 10% off.  The link here and below will auto-add it. Subscribe to Pew Pew Tactical's sales and deals email. what makes the BCM bcg better than the bcg it copies COLT. Is any of this sounding like a worthwhile version of the truth?  Go with a light-weight BCG. purchase helps support my work in bringing you more awesome gun and gear articles. Man it sucks to see how much the prices have gone up since this article was posted just a few months ago. 4 barrels in 15K rounds?? All Rights Reserved. BCM has their deal going where you get a free $95 comp, and the BCG and extended CH for $69. Do check them out. SOLGW vs. LMT LMT > SOLGW > BCM Just my opinion. I was wondering if I need to purchase a specialized upper to fit a full auto BCG since the back of it is longer and a smidgen heavier than standard ones? I'm really liking what I'm hearing about this company and seeing the products they put out. My pick if you want to go with the best-known name in the NiB BCG game. As for why any company uses or does not use a certain component treatment or build option, it's helpful to look at their customer base and what the commonly held beliefs are, in that population of individuals. We hate SPAM and promise to keep your email address safe. I say BCM. And more exotic stuff like Titanium Nitride (TiN) is gold and pretty.  And easier to clean. Stick with good quality brands like SOLGW, BCM, DD, Noveske, Colt. Definitely an interesting choice to put out the cell #. Different calibers LR .308 .223 and 9mm.Mil-Spec, modular, kits and sets. SOLGW are extremely consistent at this time." All five of my ARs are full of their stuff as I'm kindofa snob on things like that. I would have liked to see mention of enhanced bolt carrier groups like the lantac or radian that have different dimensions and can help improve accuracy. With that VDI BCG, it is one less worry. 12 Best AR-15 Bolt Carrier Groups (BCG) 1. SOLGW 14.5" Combat Grade Barrel Mid Length Gas System - 5.56 $169.99. A lightweight BCG is designed for a tuned rifle and a builder who’s willing to toss an adjustable gas block on and really tune the gun system. It's a good option, for some people, but it's not a great option for a lot of people. Hmmm...seems you left out an industry leader who actually makes BCGs and not rebrand someone else's. And they are actually the cheapest in the whole article. Change one and you have to adjust the rest. And it comes ready to be dropped into the rifle. New coatings come and go…and they all say they are the latest and greatest.  Here’s my opinion…. Our favorite guns and gear that we've tested and fully recommend. My understanding is they are OEM for BCM BCGs. Otherwise I really enjoy your articles, thanks. And has worked out great in my Faxon builds (Faxon Barrel Review). solgw- bolt carrier group ***free shipping*** Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Kind of seems like a commercial for Brownell‘s, Hard to trust a list without fail zero on it. The AR15 use the lube not only as lubricant but also captures particles. Top Shooting Drills and Zeroing Targets worth $47 FREE - Limited Period Offer, Palmetto State Armory: Heritage Rough Rider .22 LR 6.5" Revolver - $150 (Normally $180), Palmetto State Armory: PSA AR-15 Complete MOE EPT Lower - $280 (Normally $350), Brownells: Vortex Optics Spitfire HD Gen II Prism Scope - $450, Brownells: H&K AR-15 HK-Style Micro Sight Set - $150 (Normally $196), choosing a lightweight bolt carrier group, A Nerd Gun for Gun Nerds 🤓 PSA AK-103! Since LMT says the only BCG that works is theirs, I would go with what they say.
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