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
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 -
On Sale
9mm BCG With Mil-Spec Charging Handle Combo
Sale: $119.00MSRP: $158.009MM Bolt Carrier Group Made in the USA Black Nitride Finish 8620 Steel Carrier 17-4 Stainless Steel Firing Pin Ramped and Compatible with Standard AR15 Hammer Works with Both Colt and Glock Magazines MPI & HPT Removable...Sale: $119.00MSRP: $158.00 -
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 -
Out of stock
NON-SERRATED LOW MASS M16 BOLT CARRIER GROUP
$199.99NON-SERRATED LOW MASS M16 BOLT CARRIER GROUP Caliber: .223 / 5.56 / 300 Blackout Enhanced 9310 Steel (Bolt) 8620 Tool Steel (Carrier) Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring Tool Steel Extractor Shrouded Firing...$199.99 -
Odin Works 9mm Enhanced Bolt Carrier Group - Black
$169.00Odin Works 9mm Enhanced Bolt Carrier Group - Black 416 Heat Treated Stainless Steel Carrier 174 Heat Treated Stainless Steel Firing Pin Specifically Designed 9mm Extractor 174 Heat Treated Alignment Screws Proprietary Firing Pin Retainer No...$169.00 -
Out of stock
Andro Corp Nitride AR15 Bolt Carrier Group
$129.00Andro Corp Nitride AR15 Bolt Carrier Group High Pressure Tested (HPT) Magnetic Particle Inspected (MPI) Carrier machined from 8620 alloy, full auto profile, heat treated, Nitrided Gas Key machined from 4130 chromoly steel alloy, heat treated and...$129.00 -
Out of stock
Andro Corp Phosphate AR15 Bolt Carrier Group
$129.00Andro Corp Phosphate AR15 Bolt Carrier Group High Pressure Tested (HPT) Magnetic Particle Inspected (MPI) Carrier machined from 8620 alloy, full auto profile, heat treated, Nitrided Gas Key machined from 4130 chromoly steel alloy, heat treated and...$129.00