AR-15 Bolt Carrier Groups
AR-15 Bolt Carrier Groups | AR 15 BCG's
AR-15 bolt carrier groups (BCG) are crucial components of the AR-15 rifle, responsible for the cycling of the action and firing of the rifle. Our selection of BCG's includes a variety of styles, including full-auto and semi-auto, made with durable, high-quality materials such as steel and titanium. Many of our BCG's come with additional features such as enhanced gas key, NP3 coating, and chrome lining, which increases the BCG's durability, reliability, and resistance to corrosion. Whether you're a recreational or professional shooter, our BCG's offer improved performance and longevity. Browse our selection of top-quality BCG's from leading manufacturers and find the perfect fit for your rifle. Upgrade your AR-15 today with one of our high-performing BCG's and ensure smooth and reliable operation of your rifle.
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On Sale
.223/5.56 Bolt Carrier Group - Black Nitride
Black Rifle Depot
MSRP: $139.95Now: $59.95Was: $79.95.223/5.56 Bolt Carrier Group - Black Nitride The .223/5.56 Black Nitride Bolt Carrier Group was designed with strength in mind. Starting with a 9310 Steel Bolt, which is aircraft-grade material, this bolt has a high core strength rating, a high fatigue...MSRP: $139.95Now: $59.95Was: $79.95 -
Mil-Spec M16 Bolt Carrier Group (BCG)
AO Precision
MSRP: $159.95$99.95AO Precision Mil-Spec M16 Bolt Carrier Group (BCG) Reliable Mil-Spec Bolt Carrier Group for Superior Performance The AO Precision Mil-Spec M16 Bolt Carrier Group (BCG) is crafted to strict military specifications, delivering a durable and...MSRP: $159.95$99.95 -
Bootleg AR 15 Four Position Adjustable Bolt Carrier Group
Bootleg Inc.
MSRP: $209.95$199.95Bootleg AR 15 Four Position Adjustable Bolt Carrier Group The Bootleg AR-15 Four Position Adjustable Bolt Carrier Group offers superior performance, exceptional durability, and increased flexibility for the modern shooter. Machined from high-strength S7...MSRP: $209.95$199.95 -
Toolcraft .223/5.56/300 BLK M16 Profile Bolt Carrier Group - Black Nitride
Toolcraft Inc.
MSRP: $149.95$99.95Toolcraft Black Nitride .223/5.56/300BLK M16 Profile Bolt Carrier Group Toolcraft is known for their unsurpassed quality and durability in their BCG's. Mil-Spec is just the beginning, they have spent attention to detail in every aspect of the...MSRP: $149.95$99.95 -
Nickel Boron M16 Bolt Carrier Group 5.56/.223/300 BLK
Black Rifle Depot
MSRP: $149.95$139.95Nickel Boron M16 Bolt Carrier Group 5.56/.223/300 BLK (BCG) The Nickel Boron M16 Bolt Carrier Group 5.56/.223/300 BLK (BCG) from Black Rifle Depot is a high-quality, precision-machined product with exceptional performance and easy...MSRP: $149.95$139.95 -
Bear Creek Arsenal M16 Profile 5.56 Black Nitride Bolt Carrier Group
Bear Creek Arsenal
MSRP: $85.95$69.95Bear Creek Arsenal M16 Profile 5.56 Black Nitride Bolt Carrier Group This Bear Creek Arsenal BCG features a full mass M16 profile bolt carrier machined from 8620 steel and finished with Salt Bath Nitriding. The gas key is properly staked...MSRP: $85.95$69.95 -
AO Precision C158 SP/HPT/MPI 5.56 Black Nitride Bolt Carrier Group
AO Precision
MSRP: $169.95$119.95AO Precision C158 SP/HPT/MPI 5.56 Black Nitride Bolt Carrier Group AO Precision has provided BCGs to large military contractors such as FN America and large commercial retailers who re-brand and sell these at a considerable mark-up...MSRP: $169.95$119.95 -
Toolcraft Nickel Boron .223/5.56/300BLK M16 Profile Bolt Carrier Group
Toolcraft Inc.
MSRP: $159.95$134.95Toolcraft Nickel Boron .223/5.56/300BLK M16 Profile Bolt Carrier Group Features 5.56/.223/.300 Black Out Full Auto Capable Carpenter 158 MPI and HPT Tested Bolt Case Hardened 8620 Carrier 4130 Gas Key Grade 8 Hardware With Proper Staking Gas Key Sealed...MSRP: $159.95$134.95 -
AERO Precision Black Nitride Bolt Carrier Group
Aero Precision
MSRP: $170.00$144.95AERO Precision Black Nitride Bolt Carrier Group | BCG A high quality BCG that is properly staked and no obtuse machine markes. This will make a great addition to your build. Features M16-cut carrier Machined from 8620 steel Carrier has forward...MSRP: $170.00$144.95 -
Dirty Bird Dedicated 22 LR Stainless Steel Bolt Carrier Group
Dirty Bird Industries
MSRP: $169.99$152.95Dirty Bird Dedicated 22 LR Stainless Steel Bolt Carrier Group The Dirty Bird 22LR Bolt Carrier Group is perfect for an easy conversion to a dedicated .22LR setup and works with CMMG components. Our 22 LR BCG also works with Black Dog Machine...MSRP: $169.99$152.95 -
AR 15/M16 Bolt Carrier Group 6.8 SPC .224 Valkyrie Black Nitride
Black Rifle Depot
MSRP: $149.95$139.95AR 15/M16 Bolt Carrier Group 6.8 SPC .224 Valkyrie Black Nitride These Black Rifle Depot AR 15 bolt carrier group is the perfect BCG for your next AR 15 build. Properly built, no corners cut and 100 percent made in the USA. With a lifetime...MSRP: $149.95$139.95 -
Dirty Bird Industries Enhanced Bolt Carrier Group .223/5.56
Dirty Bird Industries
MSRP: $149.95$134.95Dirty Bird Industries Enhanced Bolt Carrier Group .223/5.56 The Dirty Bird Enhanced Bolt Carrier Group for .223/5.56 features a unique carrier design with practical improvements in two key areas: Strategically relocated load bearing...MSRP: $149.95$134.95 -
Lantac Mil-Spec 5.56 Bolt Carrier Group - Black Nitride
Lantac USA
MSRP: $186.99$170.99Lantac Mil-Spec 5.56 Bolt Carrier Group - Black Nitride High-Quality Mil-Spec Performance at an Affordable Price The Lantac Mil-Spec 5.56 Bolt Carrier Group offers superior quality, affordability, and enhanced parts to elevate your AR-15 build. Featuring...MSRP: $186.99$170.99 -
Sons of Liberty Gun Works AR 15 Bolt Carrier Group
Sons of Liberty Gun Works
MSRP: $199.00$179.95Sons of Liberty Gun Works AR 15 Bolt Carrier Group Precision Built to Exceed Mil-Spec Standards The Sons of Liberty Gun Works AR-15 Bolt Carrier Group is engineered for durability and reliability, meeting and surpassing Mil-Spec expectations. Built from...MSRP: $199.00$179.95 -
.223/5.56 Bolt Carrier Group - Blue PVD
Black Rifle Depot
MSRP: $139.95$117.95.223/5.56 Bolt Carrier Group - Blue PVD The .223/5.56 Bolt Carrier Group - Blue PVD is an ideal choice for your next AR15 build, offering compatibility and top-tier performance. Its PVD coating by Ionbond provides a hard surface, making cleaning easier...MSRP: $139.95$117.95 -
Faxon Chameleon M16 Bolt Carrier Group
Faxon Firearms
MSRP: $199.00$183.95Faxon Chameleon M16 Bolt Carrier Group We just can't help not accepting the status quo. Bolt carrier groups are available aplenty, but few could meet our exacting standards for performance and value. Seeing "MIL-SPEC" as just the starting point, we set...MSRP: $199.00$183.95 -
.223/5.56 Bolt Carrier Group - Chameleon
Black Rifle Depot
MSRP: $139.95$119.95.223/5.56 Bolt Carrier Group - Chameleon This M16 bolt carrier group is the perfect BCG for your next build and is compatible with any AR-15 build. The PVD coating by Ionbond provides a very low coefficient of friction while providing a unique look and...MSRP: $139.95$119.95 -
AR-15 .223/5.56 Bolt Carrier Group - FDE PVD
Black Rifle Depot
MSRP: $149.95$129.95AR-15 .223/5.56 Bolt Carrier Group - FDE PVD The M16 bolt carrier group is the perfect BCG for your next build and is compatible with any AR15 build. The "Armor Guard" PVD coating on these BCGs provides a very low coefficient of friction while providing...MSRP: $149.95$129.95 -
KAK Industry K-SPEC 9310 AR-15 5.56/.223/300BLK Bolt Carrier Group - NP3
KAK Industry
MSRP: $269.95$242.00KAK Industry K-SPEC 9310 AR-15 5.56/.223/300BLK Bolt Carrier Group - NP3 The K-SPEC BCG combines multiple key features focused on increasing the reliability of your AR15 style firearm no matter if you are running suppressed or unsuppressed, and...MSRP: $269.95$242.00 -
Toolcraft .223/5.56/300 BLK M16 Profile Bolt Carrier Group Ion Bond DLC - Grey
Toolcraft Inc.
MSRP: $209.95$189.95Toolcraft .223/5.56/300 BLK M16 Profile Bolt Carrier Group Ion Bond DLC - Grey The Palmetto State Armory DLC coated Bolt Carrier Group was designed with the serious AR enthusiast in mind. The bolt is made of Mil-spec Carpenter 158 steel, shot peened and...MSRP: $209.95$189.95 -
Lightweight .223/5.56 Bolt Carrier Group - Nickel Boron
Black Rifle Depot
MSRP: $169.95$139.95Lightweight .223/5.56 Bolt Carrier Group - Nickel Boron Enhanced Performance and Reduced Recoil for Precision Shooting The Lightweight 5.56/.223 Nickel Boron Bolt Carrier Group (BCG) for the AR-15 platform is precision engineered to MIL-SPEC standards...MSRP: $169.95$139.95 -
Toolcraft .223/5.56/300 BLK M16 Profile Bolt Carrier Group - Nickel Boron
Toolcraft Inc.
MSRP: $154.95$129.95Toolcraft .223/5.56/300 BLK M16 Profile Bolt Carrier Group - Nickel Boron The Toolcraft 5.56×45 NATO/.223 Rem (or .300 Blackout) Bolt Carrier Group comes in the Nickel Boron finish to reduce overall wear and friction, and for...MSRP: $154.95$129.95 -
Wilson Combat .223/5.56/300 BLK M16 Profile Bolt Carrier Group Nickel Boron
Wilson Combat
$199.95Wilson Combat .223/5.56/300 BLK M16 Profile Bolt Carrier Group Nickel Boron Manufactured by our finest domestic, Mil-Spec contractors these are among the best AR rifle bolts on the market and the same bolt carrier groups we use as the basis of our...$199.95 -
A*B Arms AR-15/M16 Cam Pin - Nickel Boron
A*B Arms
$9.99A*B Arms AR-15/M16 Cam Pin - Nickel Boron Most AR-15 owners and shooters put little thought into the cam pin, aside from a brief bought of mild frustration if it decides to be a little stubborn when you're dis- or reassembling your bolt carrier group...$9.99 -
Faxon Firearms Black Nitride 5.56/300 BLK M16 Bolt Carrier Group
Faxon Firearms
MSRP: $145.00$133.50Faxon Firearms Black Nitride 5.56/300 BLK M16 Bolt Carrier Group | BCG Faxon Bolt Carrier Groups are Mil-Spec with a "Superfinish" to increase the overall smoothness of operation, help reduce friction, and dramatically reduce fouling. They...MSRP: $145.00$133.50 -
Forward Controls Design Cam Pin With Witness Mark - Nitrided
Forward Controls Design
MSRP: $13.00$12.50Forward Controls Design Cam Pin With Witness Mark - Nitrided The cam pin is a part of your rifle that pretty much shooters put any thought into. Whenever we clean our BCG, we'll just reinstall the cam pin without thinking about how it can wear. According...MSRP: $13.00$12.50 -
Toolcraft 7.62x39 M16 Profile Bolt Carrier Group - Black Nitride
Toolcraft Inc.
MSRP: $159.99$129.95Toolcraft 7.62x39 M16 Profile Bolt Carrier Group - Black Nitride Reliable, Durable, and Made in the USA with a Lifetime Warranty Upgrade your AR-15 chambered in 7.62x39 with the Toolcraft M16 Profile Bolt Carrier Group, designed for exceptional...MSRP: $159.99$129.95 -
.45 ACP Enhanced Bolt Carrier Group - Black Nitride
Black Rifle Depot
MSRP: $165.00$135.00.45 ACP Enhanced Bolt Carrier Group - Black Nitride The BRD Enhanced 45 Bolt assembly is designed for AR-15 style rifles chambered for .45 ACP with a direct blowback system. This bolt is weighted with Tungsten weights adding up to 16 ounces total in...MSRP: $165.00$135.00 -
AR 15/M16 Bolt Carrier Group 6.5 Grendel Black Nitride
Black Rifle Depot
MSRP: $149.95$139.95AR 15/M16 Bolt Carrier Group 6.5 Grendel Black Nitride This AR 15 bolt carrier group is the perfect BCG for your next AR 15 build. Properly built, no corners cut and 100 percent made in the USA. With a limited lifetime warranty, you can't go...MSRP: $149.95$139.95 -
Centurion Arms C4 5.56 M16 Bolt Carrier Group
Centurion Arms
MSRP: $185.00$175.95Centurion Arms Bolt Carrier Group Precision Engineering for Reliable AR Performance The Centurion Arms C4 Bolt Carrier Group delivers the reliability and durability you need for your AR platform. Built with MPI-tested bolts and a full auto carrier, this...MSRP: $185.00$175.95 -
Faxon Firearms 6.5 Grendel 9310 Bolt Carrier Group Complete - Nitride
Faxon Firearms
MSRP: $165.00$151.95Faxon Firearms 6.5 Grendel 9310 Bolt Carrier Group Complete - Nitride Bolt: Type II (.136") bolt 9310 Tool Steel Construction (Stronger than C158) Full MIL-SPEC Heat Treatment Shot Peened to MIL-SPEC Magnetic Particle Inspection (MPI) Back of Lugs...MSRP: $165.00$151.95 -
AR-15 .223/5.56 Bolt Carrier Group - DLC
Black Rifle Depot
MSRP: $139.95$129.95AR-15 .223/5.56 Bolt Carrier Group - DLC The .223/5.56 DLC Bolt Carrier Group was designed with strength in mind. Starting with a 9310 Steel Bolt, which is aircraft-grade material, this bolt has a high core strength rating, a high fatigue strength, and a...MSRP: $139.95$129.95 -
Dirty Bird AR-15 5.56/.223/300BLK Bolt Carrier Group Phosphate/Chrome-Lined
Dirty Bird Industries
MSRP: $149.95$119.95Dirty Bird AR-15 5.56/.223/300BLK Bolt Carrier Group Phosphate/Chrome-Lined The Dirty Bird AR-15 Bolt Carrier Group comes fully assembled and ready to be dropped in. The carrier body is machined from 8620 steel, heat treated, & MP inspected...MSRP: $149.95$119.95 -
Faxon Firearms 5.56 LIGHTWEIGHT 9310 Bolt Carrier Group Complete - Nitride
Faxon Firearms
MSRP: $249.00$229.95Faxon Firearms 5.56 LIGHTWEIGHT 9310 Bolt Carrier Group Complete - Nitride When looking at lightweight bolt carrier groups, we were unsatisfied with what the market had to offer. Seeing a capability gap, we set out to create a bolt carrier group that...MSRP: $249.00$229.95 -
Toolcraft .223/5.56/300 BLK M16 C158 Profile Bolt Carrier Group - P51 (Polished DLC)
Toolcraft Inc.
MSRP: $179.95$169.95Toolcraft .223/5.56/300 BLK M16 C158 Profile Bolt Carrier Group - P51 (Polished DLC) This Toolcraft P51+ Polished DLC BCG is made with a carpenter 158 bolt with a full-auto profile, designed to be used in AR-15 & M-16 style rifles. Bolt is...MSRP: $179.95$169.95 -
AR-15/M16 Gas Key - Phosphate/Chrome-Lined
Black Rifle Depot
MSRP: $11.99$10.95AR-15/M16 Gas Key - Phosphate/Chrome-Lined Mil-Spec Gas Key for Reliable Cycling and Durability The AR-15/M16 Gas Key is a mil-spec replacement part designed to ensure reliable operation of your AR-15 or M16. Manufactured with precision and finished with...MSRP: $11.99$10.95 -
KAK Industry K-SPEC C158 AR-15 5.56/.223/300BLK Bolt Carrier Group - Chrome
KAK Industry
MSRP: $259.95$249.95KAK Industry K-SPEC C158 AR-15 5.56/.223/300BLK Bolt Carrier Group - Chrome Patent Pending The K-SPEC BCG combines multiple key features focused on increasing the reliability of your AR15 style firearm no matter if you are running suppressed or...MSRP: $259.95$249.95 -
A*B Arms Pro 5.56 Bolt Assembly - Nickel Boron
A*B Arms
$99.99A*B Arms Pro 5.56 Bolt Assembly - Nickel Boron American Built Arms Nickel Boron 5.56mm Bolt Assembly. Made in the USA to Mil-Spec dimensions, this C-158 steel bolt features a Nickel Boron coating. The E4140 steel extractor and has a Manganese Phosphate...$99.99 -
Rosco Manufacturing Bloodline 5.56/300BLK M16 Bolt Carrier Group - Nitride
Rosco Manufacturing
MSRP: $140.00$126.95Rosco Manufacturing Bloodline 5.56/300BLK M16 Bolt Carrier Group - Nitride These 5.56 / 300 BLK Bolt Carrier Groups are Melonited, Full-Auto rated, are properly staked, and the bolts are Matched to the barrel. Check your local laws and regulations on...MSRP: $140.00$126.95 -
Toolcraft .223/5.56/300 BLK C158 M16 Profile Bolt Carrier Group - Black Nitride
Toolcraft Inc.
MSRP: $129.99$109.95Toolcraft .223/5.56/300 BLK C158 M16 Profile Bolt Carrier Group - Black Nitride Toolcraft Inc. is an OEM manufacturer of bolt carrier groups (BCGs) for many AR15 makers. These companies know they can trust Toolcraft quality and are proud to have their...MSRP: $129.99$109.95