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You don't have to run full-auto to benefit from such an AR BCG. Add to Wish List Add to Compare. AR Uppers & Lowers, Rifle Accessories, Mil-Spec Parts | Aero Precision Aero Precision Nickel Boron BCG First Look Review Stabilizing a Muddy Road Russ Lanoie Sons of Liberty Gun Works East India Upper Receiver - Owner Induced Feeding Problem School of the American. Click for Details. ETC.. Give me that Sharp's all day long. Firearms instructor John Farnam has NP3 applied to not only the BCG but also the inside of the upper and lower receivers of his custom FSM4 AR15s. Facebook; Instagram; Help. Which does its job but does require more cleaning than newer coatings. Create an Account; Login; Create an Account; Cart (0) View Cart; 308 BOLT CARRIER GROUP - NICKEL BORON. Ar15 Magazine Mag Release Button mil . If you havent tried the Black Rain BCG, you are missing out on the smoothest running BCG on the market today. Facebook; Instagram; . Mil Spec is a Specification. Sale Price: $179.95 . Go/No-go gauges are too cheap to make excuses about safety concerns. Then try again. On a full-auto AR-15 or M16, this rear lug pushes the sear release downwards which allows full auto (or burst) fire. Here are some of our favorites. Enable Accessibility. Wilson Combat DPMS LR-308 Complete Bolt Carrier Group .308 Winchester Nickel Bor. For over 75 years, shooters, professional gunsmiths, hobbyists, military/law enforcement armorers, hunters, and gun tinkerers have turned to Brownells for high-quality guns, gun parts, ammunition, and more. Heres a BCG that has a trick up its sleeve. From full-auto to lightweight, different coatings, MPI inspections, and more. The DLC was chosen for high wear resistance and a low coefficient of friction. The Sharps passed with flying colors and the cleanup, even though it was filthy, was a snap. This tube has been designed to allow ample clearance for the removal of the roller cam pin during maintenance. It has a dull gray finish darker than chrome and nickel boron. I am trying to do some research between the two and can't really come up with a PROs and CONs. TSG Dark Gray Bolt Carrier Group (0) . The PVD coating by Ionbond provides a very low coefficient of friction while providing a unique look and increased reliability. NiB coatings do add thickness and most bolt makers pay attention to the bolt face but for get about the lugs, where a small buildup of carbon will lock your bolt up. Weve built dozens of ARs and well cover all the best AR-15 upgrades such as handguards, triggers, BCGs, gas blocks, and more. Why do regular bolt carrier groups still exist? Chrome is extremely hard which makes it very wear resistant. Not so sure the absorption of the recoil energy, which is a fixed value of the design of the gas system, would equal less felt recoil just by changing to a lighter mass of the BCG without addressing all the other components, gas block, recoil spring tension, and buffer mass. All of the finishes listed here are quality finishes and a good BCG will work fine with any of them. Mil-Spec generally means the rifle is built to pass military specifications. Click for Details. That was absolutely hilarious. I am interested in a full auto BCG. Faxon Firearms 5.56 M16 Bolt Carrier Complete, Chameleon PVD. Yes what he said. 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. Disassemble it completely, inspect, clean and lube it as you would a standard phosphate carrier group. What about AR-15s by Geissele? QPQ Black . I of course went with their Titanium Nitride (TiN). Nope, SA and FA BCGs have the same dimensions and will fit in any standard AR-15 upper! Your AR15 build is important to you, so it is important to us. Walker Defense Research Nickel Boron Bolt Carrier Group (1) $179.99 (Save 17%) $149.00 4 models Wilson Combat Bolt Carrier Assembly (28) As Low As (Save Up to $6.24) $179.95 Jacob Grey Firearms High Polished Nickel Boron 5.56 Bolt Carier Groups (1) $219.00 (Save 15%) $186.00 15% Bonus Bucks Shop our vast selection and save! Nickel Boron (NiB) coatings offer durable and reliable operation. 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. Nickel Boron M16 Bolt Carrier Group Shot Peened Bolt Gas Key Hardened to USGI Specifications Gas Key Grade 8 Hardened Fasteners Gas Key Staked Per Mil-Spec Tool Steel Extractor Extractor Spring Extractor O-ring Insert 223/5.56/300 Blackout Now . Precision machined from high quality 8620 steel and coated with NiB electroless nickel boron with advanced UCT EXO, these Bolt Carrier Groups by LANTAC offer ultimate lubricity for a smoother operation. In both categories though, Nickel Boron has the edge over Nitride. A great upgrade. And theres their Titanium BCG for 5.56/.300 BLK. How to Build An AR-15: Your AR Build Made Easy, BROWNELLS - M16 5.56 LIGHTWEIGHT BOLT CARRIER GROUP, BROWNELLS - M16 5.56 BOLT CARRIER GROUP NITRIDE MP, BROWNELLS - M16 5.56 BOLT CARRIER GROUP CHROME MP, FOXTROT MIKE PRODUCTS - FM-9 BOLT CARRIER ASSEMBLY, BROWNELLS - M16 5.56 BOLT CARRIER GROUP TiN MP, BROWNELLS - M16 6.5 GRENDEL / 6MM ARC BOLT CARRIER GROUP NITRIDE MP, BROWNELLS - M16 5.56 BOLT CARRIER GROUP NICKEL BORON MP, DANIEL DEFENSE - M16 5.56 BOLT CARRIER GROUP, SPIKES TACTICAL - M16 5.56 NICKEL BORRON BOLT CARRIER GROUP, BRAVO COMPANY - M16 5.56 BOLT CARRIER GROUP, WMD GUNS - M16 5.56 NICKEL BORON BOLT CARRIER GROUPS, BROWNELLS - M16 7.62X39 BOLT CARRIER GROUP NITRIDE MP, BROWNELLS - AR-15 9MM BOLT ASSEMBLY FOR GLOCK, SPIKES TACTICAL - M16 5.56 BOLT CARRIER GROUP, WMD GUNS - AR-15 5.56 NICKEL BORON BOLT CARRIER GROUPS, RUBBER CITY ARMORY - AR-15/M16 ADJUSTABLE GAS KEY, BROWNELLS - AR15 BOLT CARRIER GROUP 5.56X45MM NITRIDE MP, VOLQUARTSEN - RUGER 10/22 COMPETITION BOLT ASSEMBLY, FOXTROT MIKE PRODUCTS - AR-15 FM-9 COLT BOLT CARRIER ASSEMBLY, BROWNELLS - M16 6.8MM SPC BOLT CARRIER GROUP NITRIDE MP, California Residents: Do Not Share My Personal Information. Lets just start with our editors pick for a branded mil-spec BCG. Anyone have any experience with Sharps Rifle Co. BCGs? This coating offers unfaltering protection from wear and corrosion that would ordinarily degrade . Because nitrided bolt carrier groups do not require chrome lining of the gas key or inner areas of the bolt carrier, manufacturing costs are reduced. The bolt carrier is machined from 8620 carbon steel. Bolt is shot Peened and HPT/MPI. They are both winners, go with the finish that gives you the finished look you want. M16 Complete Bolt & Carrier Group - Nickel Boron, AR15 Complete Low Mass Bolt & Carrier Group - Nickel Boron, AR15 Complete Low Mass Bolt & Carrier Group - Nitrided, Del-Ton AR15 MP/HP Tested Bolt & Carrier Assy, Del-Ton M16 MP/HP Tested Bolt & Carrier Assy BCG, Fostech AR15 M16 Bolt Carrier Group Black Nitride - 6226 ** LAST ONE, FosTech Complete LOW MASS Bolt Carrier Group (Nickel Boron), Odin Works 6.5 Grendel Type 2 Black Nitride Bolt Carrier Group, Anderson MFG AM-10 .308 Bolt Carrier Group, AR10 .308 Complete Low Mass Nitride Bolt & Carrier, 6.8SPC/224 Valk M16 Complete Mil-spec Bolt & Carrier - Nitride, Anderson Mfg .458 SOCOM Bolt Carrier Group, Angstadt Arms AR15 5.56 NATO Complete Bolt & Carrier Group QPQ Black Nitride Finish, AR15 .450 Bushmaster/.458 SOCOM Bolt Carrier Group, AR15 7.62x39 Complete Bolt & Carrier - Nitride, Black Rain Ordnance .308 AR Complete Bolt Carrier Group -Nickel Boron Coated NIB Finish, Brownells M16 5.56 MP Chrome Bolt & Carrier, Colt Manufacturing M16 5.56 Complete Bolt & Carrier, Faxon Firearms 5.56 M16 Bolt Carrier Complete, Chameleon PVD, Guntec AR15 Complete Mil-Spec Bolt Carrier Group (Rainbow Pvd Coated), Guntec AR15 Complete Mil-Spec Bolt Carrier Group (Titanium Coated), JP Enterprises 308 SS LMOS Carrier Group w/ JP Enhanced High Pressure Bolt (DPMS Platform) - Polished Finish, JP Enterprises 308 SS LMOS Carrier Group w/ JP Enhanced High Pressure Bolt (DPMS Platform) - QPQ Black Finish, JP Enterprises Full Mass Stainless Carrier with Key, JP Enterprises Low Mass Polished Stainless Carrier with Key installed, JP Enterprises Low Mass Stainless Carrier with Key, Lefty Complete Bolt & Carrier Group - Nitrided, Midwest Industries AR15 Bolt Carrier Group - Black Nitride, Stern Defense SD BU9 NiB ECHO - Glock Compatible, Powered by Network Solutions Online Store. Designed for use with all 5.56-NATO-based cartridge cases. AR-15 Pistol vs Rifle: Which Should You Choose? Rated 5.00 out of 5 $ 125.00 $ 114.99 $ 125.00 $ 114.99 Add to cart Quick View. I soaked up as much information as I could online, at competitions, and from tinkering in my workshop. Saltwater, White Label Armory barrels are produced in-house by Outerwild. It also offers unmatched lubricity. That would be a more interesting, informative, and transparent story on BCGs. The semi-auto ones have an extra cut that takes out some mass. RISE Armament Nickel Boron Bolt Carrier Group for AR-15 Price: $179.00 See Product Details Increase the smoothness of your shots with this RISE Armament BCG. Please email johnd@spikestactical.com or call 407.928.2666 to acquire a Return Merchandise Authorization Number (RMA.) Knurled Side Charging Handle (0) $16.75 On sale: $14.99 Out of stock . I believe 9310 steel is stronger than C158. Phosphate would be my last choice but if I am feeling nostalgic then it's the only choice. guns & Our Price: $130.00. And easier to clean. Titanium Nitride is an extremely hard ceramic material, often used in aerospace and military applications that improves the maintenance, cleaning, and edge retention. Please view details for more information. Want something in the middlethats mil-spec AND Nitride coated? The XPB has a patented Relia-Bolt and is machined out of S7 tool steel. With that VDI BCG, it is one less worry. White Labels parent company, Outerwild produces our M16 BCG which is trusted by seasoned shooters a, White Label's house made M16 Bolt Carrier Group is the perfect BCG for your next build and is compat, SP4 Extreme Wear Coating Technology is here! With nothing more than an initial lube, I ran this bolt carrier suppressed at breakneck speeds for just over 1,200 rounds the last 500 or so were steel-cased. Nickel-Boron +12. I don't mind paying more for more performance, but I don't like to waste my money on gimmicks either. But youre here for BCGs. what makes them better than Colt,Bcm because they might be easier to clean? Shop our vast selection and save! Our Low Price $325.41 . The slightly longer and heavier bolt carrier group has an additional lug at the rear of the bolt carrier group. But if mil-spec is the name of the gameget the BCM. Main lessonget a full-auto weighted BCG if reliability is a concern. Brownells is your source for Chameleon Nickel-Boron Bolt Carrier Groups,Bolt Parts at Brownells parts and accessories. The resulting surface is extremely hard which makes it very resistant to wear and corrosion. *Coloration can vary greatly from BCG to BCG due to the manufacturing process. Sale! So, if youre building a SHTF, zombie-apocalypse-proof, riflego with a regular BCG. 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. 009-FZM16/4-01-NH. The bolt carrier group (BCG) is without a doubt the hardest working component inside an AR15. The finish is valued for its slickness and durability. If you are looking for the perfect AR bolt carrier group for sale, Omaha Outdoors carries the 9mm, AR-10/AR-15 BCG and much more for low online prices! In fact, chrome BCGs are somewhat difficult to find today, but worth it if you can find one. The Lantac Auto E-BCG is a great solution for your favorite auto rifle with increased mass and lock time. M16 Bolt Carrier GroupBillet Extractor, 5.56, Chameleon (2 reviews) Write a Review $129.95 SKU: 2009-0713-001 Quantity: Description Reviews White Label's house made M16 bolt carrier group is the perfect BCG for your next build and is compatible with any AR15 build. The F-1 DuraBolt bolt carrier group is M-16, full-auto rated. The Spikes Tactical M16 5.56 Nickel Boron Bolt Carrier Group puts the Spikes reliability and durability into your custom AR-15. Nickel Boron is an advanced metal finish that offers high resistance to wear and corrosion as well as having an ultra low co-efficient of friction. Rough finish that requires more lubricant to run smoothly, Bravo Company (BCM) Bolt Carrier Group (Brownells). This. It's a difficult finish to apply and as a result it is one of the more expensive finishes. wow!! 800-741-0015. Properly manufactured BCGs with a phosphate finish will still have a chrome lining inside the gas key and inside the carrier where the gas rings ride. Copyright 2023 Pew Pew Media, Inc. All rights reserved. Mil spec is a >minimum<. All critical parts are coated with EXO Nickel Boron technology that provides . It is not only the most complicated component but also the hardest working one as well. Learn all the important stuff about handgunswith none of the attitude. Top 5 Best AR-15 BCG Bolt Carrier Group Reviews. should ban this idiot from writing anything and only let professionals with experience and actual knowledge speak. Shell be able to help you out. Go with a lightweight BCG. For a more detailed look at Nickel Boron see our blog post: Top 3 Reasons You Might Want a Nickel Boron BCG. Chrome is a timeless classic and you really don't need a reason to choose it. There Bolt Carrier Groups (BCGs) Fail Zero M16/Full Mass Nickel Boron EXO Bolt Carrier Group - BCG / Print: Fail Zero M16/Full Mass Nickel Boron EXO Bolt Carrier Group - BCG DEAL OF THE DAY Rating: Total Reviews: (104 reviews) Write a Review Product Code: FZ-01428 MSRP: $169.99 Sale Price: $114.95 Savings: $45.05 Add Charging Handle: None 6 Reviews. But not all the time. This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR15 upper receivers. Also see our review of the Toolcraft Nickel Boron BCG here: Toolcraft Nickel Boron BCG Review and our review of the Fail Zero BCG here: Fail Zero BCG Review. The Massad Ayoob Group (MAG) Qual is Expensive especially since you will probably have to send yours in to be refinished. Nickel Boron 5.56 Bolt Carrier Group (BCG) Was: $165.00 Sale: $139.99 Minimum Purchase: 1 unit Shipping: Free Shipping Current Stock: Quantity: Add to Wish List Overview Product Description Nickel Boron 5.56 Bolt Carrier Group (BCG)- FREE SHIPPING! But be sure to get the most out of it with an Adjustable Gas Block. If you ask most people online what's their go-to BCGthe vast majority is going to be BCM's M16 BCG. Heres my opinion, That does it for BCGsthere are lots to choose from. FOREVER. Faxon Bolt Carrier Groups are Superfinished to reduce friction, increase smoothness of operation, and reduce fouling. In the back of your mind, youll know its not mil-specbut its about half the price of the BCM. Trouble is finding one. Above: Toolcraft DLC BCG installed with black anodized Aero Precision upper, lower and M-LOK handguards. Rich, I'm one of those aforementioned "newbies." Plus, how many of this list are made by the same REAL manufacturer? Add To Cart. what makes the BCM bcg better than the bcg it copies COLT. The nitride finish on the carrier and bolt provides added corrosion resistance, making it a great . White Label Armory's secret sauce: PRECISION GROUND. Out of stock. The title should read, These are the 10 best that I use since most of them are affordable. I use and have used a lot of the different BCGs out there, both cheap ones and high priced ones. And has worked out great in my Faxon builds (Faxon Barrel Review). I'm sure they have some advances with their $500 BCG but mine won't be in for months. Once again I'd love some feedback and comments as I'm researching! I own a few from cryptic Coatings, Radian, and toolcraft. AR-15 / M16 FAIL ZERO Nickel Boron Bolt Carrier Group This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16, M4 or AR15 upper receivers. While Nickel Boron (NiB) is silver and shiny. Better than any "mil-spec" BCG because of its gas porting. Understanding the AR-15 Bolt Carrier Group Is that little bit of extra performance important to you? 13 Best AR-15 Bolt Carrier Groups (BCG) 1. And more exotic stuff like Titanium Nitride (TiN) is gold and pretty. Whats your take on the BCM? With that comes a Gucci price though. Cryptic is the best Ive ever used as well. AR15 Bolt Carrier Groups White Label's parent company, DRG Manufacturing produces our M16 BCG which is trusted by seasoned shooters and depended on by experienced builders. One of my favorite uppers and full rifle manufacturers is Aero Precision (review of their M4E1 5.56 upper). And now I hope to answer some of yours! Also, to everyone, be careful with NiB bolts, and be sure to check headspace on every build. O.D. Since the typical AR platform uses a direct gas impingement design, the bolt group is in contact with carbon-laden gas with every shot. Learn more at. Subscribe to Pew Pew Tactical's sales and deals email. That means each bolt is individually tested at a proof load. 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. But if you want all the functionality at half the price? Get Our Top Shooting Drills and Zeroing Targets ($47 value - but FREE for a limited time). $199.00. This BCG will meet your performance standards and value. I have 329 pro builds UMB..BEST BCG. The Brownells M16 5.56 Complete Bolt Carrier Group features a bolt fabricated from 9310 steel th. I've heard lots of good things about Radian and it sounds like you're a fan as well? 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. Complete AR Upper Receivers & Firearm Kits, AR15 BCG Chrome-Lined Manganese Phosphate, M16 Bolt Carrier GroupBillet Extractor, 5.56, Nitride, M16 Bolt Carrier GroupBillet Extractor, 5.56, Titanium Nitride (TiN), M16 Bolt Carrier GroupBillet Extractor, 5.56, SP4, M16 Bolt Carrier GroupBillet Extractor, 5.56, Blue PVD (Blemished), M16 Bolt Carrier GroupBillet Extractor, 5.56, Blue PVD, M16 Bolt Carrier GroupBillet Extractor, 5.56, Polished Nickel Boron Coating, Saltwater Arms M16 Bolt Carrier GroupBillet Extractor, 5.56, Nickel Boron Coating, AR15 16" Barrel5.56 NATO, Mid-Length, 1:7 Twist, Government Profile, AR15 Ambidextrous Charging Handle by Brace BuiltBillet. Is this the Young Manufacturing that doesn't know how to stake their gas keys? Personalize your experience. , With so many options out there, SpiceTac rates the best 9mm ammo for self-defense, home CMMG Bravo .22 LR Conversion Kit W/ One 25 Round Magazine. Butthe makers have hooked you up with coupon code PewPew for 10% off. The main reason to get this finish is going to be appearance. And of courseBrownells has entered the game with their version of the Titanium BCG. See our review here: Toolcraft is an OEM provider of BCGs to AR15 manufacturers. In Stock. Radically improves the performance of your AR15/M16 and eliminates the need to apply oil or grease to treated parts for the life of the weapon. Nickel-Teflon +1. It's a good option, for some people, but it's not a great option for a lot of people. White Labels house made M16 bolt carrier group is the perfect BCG for your next build and is compatible with any AR15 build. Both are superior finishes with distinctly different looks. Currently Im using BCM, F-1 Firearms, Cryptic Coatings, Lantac, JP Rifles and a few others. It comes in at 7.9 ounces and is indistinguishable from their regular Nitride version except when you pick it up. 5.56/300 Blk or 6.8 SPC Nickel Boron Bolt Carrier Group $150.00 - $160.00 Choose Options AR-15/AR-10 Gas Key Screws $3.00 Add to Cart AR-15 Firing Pin Retaining Pin $2.50 Add to Cart AR-10 Nickel Boron Bolt Carrier Group $240.00 Add to Cart AR-15 Firing Pin $8.00 Add to Cart AR-15/M16 Extractor Spring $2.00 Add to Cart AR-15 Extractor Buffer $2.00 Of a given product or application of a feature. From my perspective, however, 9310 is an excellent option and is objectively stronger than 8620 and Carpenter 158 steel. Share your e-mail with us to receive regular sales, offers, and promotions. Toolcraft Phosphate Bolt Carrier Group (SpiceTac), Toolcraft is an OEM provider of BCGs to many firearms manufacturers. You can cut a few ounces off by using a low-mass bolt carrier. QPQ +1. You do not pay Change one and you have to adjust the rest. Full mil-spec everything. So maybe a dumb question, but a new BCG makes it easier to clean and maybe less recoil, right? Also known as Melonite, Salt Bath Nitride or simply Nitride, this is a heat treating process that creates a case hardened surface by diffusing nitrogen into the metal surface. Both steels have high hardenability and are mostly used to manufacture components with a large cross-section requiring high toughness and core strength, usually on critical aircraft engine gears, or automotive applications. It is a surface treatment that unlike coatings will never chip or flake off. We haven't used one yet but there has been very negative feedback we've heard. $254.99 $184.99 Sale. This clown not mentioning it, and then listing 10 absolute pieces of trash is embarrassing for a tactical website. 9mm Ramped Bottom Bolt Assembly BCG - Colt Compatible - Closeout! Just asking since I'm enjoying learning about all of the fun you can have with the adult lego set! Get proficient on YOUR time. 5.56 Bolt Spikes HPT/MPI Bolt Assembly - Phosphate $ 89.95. Nitride has many advantages but it is not mil-spec for BCGs and that is an important consideration for some. The bolt itself is standard Colt milspec. Do check them out. For these reasons, it is a very popular AR-15 BCG finish. If none of that is you then Black Nitride and done! M16 Bolt Carrier Group 5.56 - Chameleon PVD . My WMD NiB BCG has been chugging along in my AR pistol for a few thousand roundsand Ive only needed to wipe it down with some cleaner and microfiber cloth. It also has high corrosion resistance as well as a natural lubricity. The link hereand below will auto-add it. Semi-auto carriers are now the ugly step-child of the BCG world and dont have many purposeslike commercial buffer tubes and stocks. Can anyone recommend a BCG compatible with an LMT .308? ACME Machine has been in business since 1976 crafting highly precise components. Nickel Boron is easy to find today while Chrome is hard to find and generally more expensive. Want to go lightweight for competitive shooting? Any reduction in recoil and firearm movement, in general, helps you stay on or get back on target as you fire. They might will get you the part that you need. Lantac E-BCG. The added mass of the BCG along with its shrouded firing pin takes away the worry of weapons failure. Pros. It's bes Choosing a BCG for your next rifle build doesn't have to be a chore. Again9310 bolt. Restrictions apply, Offer ends 3/5/2023. Click below for a FREE LESSON! Review our complete Return Policy Financing Available Out of stock. Shout out to Voodoo Innovations. Using our fully automated robotically, White Label Armory's in-house machined AR15 billet upper receivers are the perfect complement to our, The AR15 Ambidextrous charging handle made by Brace Built begins with the design, program, machining. Properly built, no corners cut. I LOLd at the Magnetic Particle tested bolt picture. Meticulous machining and a BLUE PVD finish by Io, Saltwater Arms M16 Nickel Boron Bolt Carrier Group is the perfect BCG for your next build. Let's sort through some of the more popular BCG finishes and coatings and see the Pros, Cons and Recommendations! If I want to add a little color or bling to a rifle then I remember the song "Silver and Gold" from the Rudolph The Red Nosed Reindeer movie. Well cover some of the choices and then our favorites for different purposes (and budgets)from mil-spec to competition and even some builds just for looks. If you're looking for the best bolt carrier group for sale, you need to shop with Surplus Ammo. . I like bcg from Daniel defense and spikes tactical. You could have just said Toolcraft, the company that actually manufactures 3/4 of the items you listed. (no automatic penis or mouthfuls of jizz for BATFE) The gold color is unique and makes a very nice contrast against the matte black of the AR15. 15k rounds and counting on my carbine. It physically moves backward into the buffer tube as the gun is fired and does the work of chambering the next round when pushed back into battery by the buffer. Facts^ Hand-Picked Daily GUN DEALS, and Exclusive Coupons Codes >>>, choosing a lightweight bolt carrier group. I have an old Colt AR15 semi-auto BCG. The chances of that mattering for an average shooter that puts even a few thousand rounds downrange a year is super slim. As someone who's tactically thrifty, I've only used Toolcraft BCGs in my builds(*), and have never had a problem. Buy PSA m16 full auto nickel boron bolt carrier group: GunBroker is the largest seller of AR15 Parts Gun Parts All: 973044689. The 308 Relia-Bolt is made of robust 9310 nickel-chrome-moly alloy steel. Hmmmseems you left out an industry leader who actually makes BCGs and not rebrand someone else's. Faxon Chameleon AR-15 Complete Bolt Carrier Group If you want your AR-15 rifle to perform at the highest level then look no further than this Faxon Chameleon AR-15 5.56 NATO Complete Bolt Carrier Group. I've doubled the price of my first AR (Ruger AR556) with optic and other upgrades. LMT says their MARS-H platform is SR-25 and the only BCG that will work in their own BCG. It has an attractive gray graphite-like appearance. Yea, nitride is just fine! Sharps Rifle Company has a storied history strongly tied to the Old West. Extreme hardness and corrosion protection, Ballistic Advantage DLC BCG (Ballistic Advantage), Above: Toolcraft BCG with Titanium Nitride finish.