Bolt Carrier Groups
At Grid Defense, we provide a diverse range of Bolt Carrier Groups designed to deliver exceptional reliability and performance for your AR-15 rifle. Our meticulously crafted BCGs, constructed from premium materials and featuring precise engineering, ensure smooth cycling, enhanced durability, and easy maintenance, allowing you to focus on your shooting experience with confidence. Explore our selection of top-notch bolt carrier groups to elevate the reliability and functionality of your AR15.
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DEDICATED .22LR STAINLESS STEEL BOLT CARRIER GROUP
Sale: $149.99MSRP: $219.95.22LR STAINLESS STEEL BOLT CARRIER GROUP Stainless Steel Lightweight Chambered in .22LR Fits Most Standard AR-15 Upper Receivers Compatible with CMMGSale: $149.99MSRP: $219.95 -
9MM BOLT CARRIER GROUP AND AMBIDEXTROUS CHARGING HANDLE
$199.009MM BOLT CARRIER GROUP Complete, drop-in carrier/bolt assembly is ramped on the bottom to provide clearance for a factory .223/5.56mm hammer in your 9mm conversion. Eliminates the need to install a dedicated 9mm hammer, so the original fire control...$199.00 -
NICKEL BORON 7.62X39 BOLT CARRIER GROUP
$169.00NICKEL BORON 7.62X39 BOLT CARRIER GROUP Bolt Bolt Carrier Extractor Cam Pin Carrier Key Firing Pin Nickel Boron Finish$169.00 -
FAILZERO M16 BOLT CARRIER GROUP - NICKEL BORON
$169.99Failzero M16 Bolt Carrier Group - Nickel Boron Includes: Firing Pin Bolt Carrier Extractor Cam Pin Carrier Key Bolt & Extractor (5.56 / .223 Compatible)$169.99 -
450 BUSHMASTER BOLT CARRIER GROUP
$189.99450 BUSHMASTER BOLT CARRIER GROUP Bolt Extractor Bolt Carrier Gas Key Gun attachment with Cam Pin Firing Pin$189.99 -
AR-15 Bolt Carrier Group Completion Kit - 5.56/.300
$79.99AR15 Bolt Assembly 9310 MPI - 5.56/.300 Caliber: .223/5.56/300AAC Bolt Material: 9310 Steel MPI (Magnetic Particle Inspected) Bolt Finish: Nitride Black Oxide Extractor Part is a Completely Assembled Bolt (see...$79.99 -
AR15 HIGH POLISH NICKEL BORON BCG AND AMBIDEXTROUS CHARGING HANDLE
Sale: $169.00MSRP: $218.99AR15 HIGH POLISH NICKEL BORON BCG AND AMBIDEXTROUS CHARGING HANDLE AXEM Distributors High Polish Nickel Boron M16 Bolt Carrier Group Shot Peened Bolt Gas Key Hardened to USGI Specifications Gas Key Grade 8 Hardened Fasteners Gas Key Staked...Sale: $169.00MSRP: $218.99 -
FAILZERO 458 SOCOM BOLT CARRIER GROUP NO HAMMER NIB
$189.99FAILZERO 458 SOCOM BOLT CARRIER GROUP NO HAMMER NIB Fail Zero BCG Bolt Gas Key Extractor Bolt Carrier Cam Pin Firing Pin$189.99 -
CMMG .22 ARC Bolt Group
$219.99CMMG .22 ARC Bolt Group Machined from Stainless Steel Durable and Long Lasting Compatible with Milspec AR15 Upper Receivers Designed for .22LR Conversions Made in the USA$219.99 -
Nickel Boron M16 Bolt Carrier Group - High Polish
Sale: $139.00MSRP: $179.00Nickel Boron M16 Bolt Carrier Group - High Polish 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...Sale: $139.00MSRP: $179.00 -
AMBI CHARGING HANDLE + GOLD M16 BCG COMBO
$188.99AMBI CHARGING HANDLE + BLUE PVD M16 BCG COMBO Gold AR15 Bolt Carrier Group Milspec Carpenter No. 158® steel bolt Shot Peened Bolt Gas Key Hardened to USGI Specifications Gas Key Grade 8 Hardened Fasteners Gas Key Staked Per Mil-Spec Tool...$188.99 -
CMMG 22LR AR CONVERSION KIT
$229.95CMMG 22LR AR CONVERSION KIT All Stainless Steel Construction includes Anti-Jam Charging Handle, Cleaning Jag Guide Rod, Forward Assist Adaptor, and a 25rd Magazine. Works in most 5.56/.223 chambered rifles 3 25 Round Magazines$229.95 -
FAILZERO 6.5 GRENDEL BOLT CARRIER GROUP
$179.996.5 GRENDEL BOLT CARRIER GROUP Nickel Boron treated parts include: Bolt & Extractor (.224 Valkyrie and 6.8 SPC compatible) M16 Cut Bolt Carrier Cam Pin Carrier Key Firing Pin Fail Zero 6.5 Grendel BCG$179.99 -
FAILZERO 7.62X39 NO HAMMER BOLT CARRIER GROUP NIB
$189.99FAILZERO 7.62X39 NO HAMMER BOLT CARRIER GROUP NIB Nickel Boron treated parts include: Bolt & Extractor (7.62x39 compatible) M16 Cut Bolt Carrier Cam Pin Carrier Key Made In the USA$189.99 -
FailZero AR10 No Hammer Bolt Carrier Group - Nickel Boron
$259.99AR10 (.308) BCG - No Hammer Description This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec AR10 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry...$259.99 -
Spike's Tactical M16 Light Weight Bolt Carrier Group - Nickel Boron
$250.00Complete Nickel Boron Plated M-16 BCG Nickel Boron Coating Inside and Out (Bolt, Carrier, and Gas Key) Laser Engraved with ST Spider logo Mil Spec Carrier 8620 Tool Steel Full Auto M-16 Holes for Reduced Weight (-1oz) Bolt 158 Carpenter...$250.00 -
FailZero .224 Valkyrie Bolt Carrier Group - Nickel Boron
$179.99.224 VALKYRIE BOLT CARRIER GROUP Bolt Gas Key Extractor Bolt Carrier Cam Pin Firing Pin$179.99 -
308 Bolt Carrier Group With Ambidextrous Charging Handle
$228.99308 Bolt Carrier Group With Ambidextrous Charging Handle 308 Bolt Carrier Group 8620 Steel Carrier Salt Bath Black Nitride Finish Staked gas key 308 Ambidextrous Charging Handle Ambidextrous Charging Handle .308 Winchester/DPMS...$228.99 -
FAILZERO LIGHTWEIGHT BOLT CARRIER GROUP
$234.99FAILZERO LIGHTWEIGHT BOLT CARRIER GROUP Specs - Carrier weighs only 6.4 oz and complete BCG is only 9.2 oz - Compatible in all Mil-spec AR Platforms - All components are EXO Nickel Boron with a high polish finish -...$234.99 -
AMBI CHARGING HANDLE + CHAMELEON PVD M16 BCG COMBO
Sale: $169.00MSRP: $238.99AMBI CHARGING HANDLE + CHAMELEON PVD M16 BCG COMBO M16 Bolt Carrier Group 5.56 - Chameleon 8620 M16 Style Carrier Ionbond Coating (PVD) Heat Treated Final Grind Before Plating 9310 5.56/.223 Bolt Heat Treated Shot...Sale: $169.00MSRP: $238.99