Bolt Carrier Groups

The Enhanced Bolt Carrier Group for AR15/M16 platform weapons was designed to minimize carrier tilt and reduce friction inside the upper receiver by relocating key bearing surfaces. All materials, tolerances, and coatings meet or exceed milspec...

*Back in Stock Soon*   These have Mil-Spec Carrier Key Screws. If you prefer the Premium Variant (upgraded w/ OCKS Carrier Key Screws), Click Here. Microbest is one of the finest manufacturers of mil-spec bolt carrier groups for the military and...

Microbest is one of the finest manufacturers of mil-spec bolt carrier groups for the military and small arms manufacturers. These are individually High Pressure Tested and then undergo a Magnetic Particle Inspection. We recommend degreasing and...

NOTE: All BCM bolt carrier groups are factory test fired. The BCG may show handling marks consistent with these quality control procedures.The Bravo Company Manufacturing Bolt Carrier Group, with a parkerized exterior and chrome lined carrier interior,...

The Daniel Defense M16 Cut Complete Bolt Carrier Group is a MIL-SPEC, full auto compatible, M16 profile bolt carrier group assembly. The 8620 steel carrier and Carpenter 158 steel bolt assembly have been heavy phosphate coated for excellent durability...

The Aero Precision PRO 5.56 Bolt Carrier Group is built from the ground up to meet the demands of the most extreme conditions. Each component and manufacturing process of the PRO 5.56 Bolt Carrier Group was deliberately chosen to increase the reliable...