Angstadt Arms AR-15 .223/5.56 Bolt Carrier Group - Black Nitride

The Angstadt Arms AR-15 Bolt Carrier Group Assembly is a complete, drop-in BCG machined to Mil-Spec dimensions for Mil-Spec AR-15 upper receivers. It supports AR-15 configurations chambered in 5.56x45mm NATO, .223 Remington, and .300 Blackout.

The assembly combines a precision-machined 8620 alloy steel carrier with a Carpenter 158 tool steel 5.56 bolt. The bolt is high-pressure tested, magnetic-particle inspected, and shot-peened. Its M16-cut carrier profile includes forward-assist serrations and is compatible with most AR-15 triggers.

A properly staked gas key is secured with Grade 8 fasteners. The carrier group has a QPQ black nitride finish and black color. This current-production component is offered in New condition.