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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On Sale
M16 Bolt Carrier Group
Sale: $69.00MSRP: $149.00M16 Bolt Carrier Group Milspec 9310 steel bolt 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: $69.00MSRP: $149.00 -
On Sale
Nickel Boron M16 Bolt Carrier Group
Sale: $129.00MSRP: $179.00Nickel 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...Sale: $129.00MSRP: $179.00 -
On Sale
9mm Bolt Carrier Group
Sale: $109.00MSRP: $149.009MM 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...Sale: $109.00MSRP: $149.00 -
Out of stockOn Sale
M16 Bolt Carrier Group - Titanium Nitride Coated
Sale: $164.00MSRP: $199.00Titanium Nitride coated 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 Steel Extractor Extractor Spring Extractor...Sale: $164.00MSRP: $199.00 -
On Sale
.450 Bushmaster/.458 SOCOM Bolt Carrier Group
Sale: $99.00MSRP: $199.00.450 Bushmaster/.458 SOCOM Bolt Carrier Group Black Nitride Carrier Finish 9310 Steel Bolt MPI Bolt (Magnetic Particle Inspected) Parkerized Bolt Finish Staked Gas Key Compatible with .450 Bushmaster and .458 SOCOM AR-15 platformsSale: $99.00MSRP: $199.00 -
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 -
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