AR-15 Bolt Carrier Group Mil-Spec BCG (Cerakote Blue)

Description

This Mil-Spec AR-15 Bolt Carrier Group is designed for 5.56 caliber platforms, providing a complete assembly for upper receiver builds. The carrier is machined from 8620 Steel, offering a balance of strength and weight suitable for standard AR-15 configurations. The bolt component is crafted from 9310 Bolt material and undergoes Magnetic Particle Inspection (MPI) to verify structural integrity against fatigue and stress fractures. A hydraulically staked carrier key ensures the gas key remains securely fastened to the carrier body, maintaining proper gas flow and timing. The assembly utilizes Grade 8 screws to meet Mil-Spec tensile requirements, ensuring reliable retention under high-pressure cycling. The entire unit is finished in a Cerakote Blue coating, which provides corrosion resistance and a distinct visual profile. Heat treatment processes are applied to the components to enhance durability and performance characteristics. Manufactured in the USA, this bolt carrier group serves as a direct replacement or upgrade for existing AR-15 builds. The matte Blue finish offers a non-reflective surface that complements various handguard and upper receiver aesthetics. This component is a critical part of the firearm’s operating system, responsible for locking the bolt to the barrel extension and extracting spent casings.