AR Bolt Carrier Groups

Daniel Defense

Fail Zero

This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec .458 SOCOM …

Fail Zero

This 6mm ARC Grendel Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most Mil-…

Fail Zero

The Fail Zero complete bolt carrier is the BCG that you want to put in your rifle. The Fail Zero BCG…

Fail Zero

This low mass BCG provides smoother operation and less recoil resulting in faster target reacquisiti…

FosTech Outdoors

FOSTECH COMPLETE BOLT CARRIER GROUP (NICKEL BORON COATING)

FosTech Outdoors

This is a standard full-auto M16 cut bolt carrier group. It is designed to function with the Echo AR…

Lantac USA

M16 Full Auto Style for increased mass and lock time. Our new BCG is precision machined from 8620 St…

Lantac USA

AR10 Full Auto Style for increased mass and lock time. Our DPMS Style 308 BCG is precision machined …

Lantac USA

M16 Full Auto Style for increased mass and lock time. Our BCG is precision machined from 8620 steel …

One Horse

Run your rifle with confidence using this reliable M16 bolt carrier group. Built for 5.56/.223 and .…

One Horse

Dominate any range with this precision-crafted M16 Bolt Carrier Group (BCG). Designed for seamless c…