AR-15 Bolt Carrier Group Mil-Spec BCG (High Polish Tin Coated)

Description

Constructed from 8620 Steel, this Mil-Spec AR-15 Bolt Carrier Group is engineered for builders requiring precise dimensional tolerances and reliable cycling. The bolt carrier features a High Polish Tin Coating (Gold Titanium Nitride Finish) to enhance surface durability and lubricity, while the bolt itself utilizes a Nickel Boron Finish for reduced friction and extended service life. Every component is manufactured in the USA, ensuring strict adherence to domestic quality standards.

Internal integrity is verified through 9310 Bolt MPI (Magnetic Particle Inspected) testing, identifying potential material defects before assembly. The gas key is secured via Hydraulically Staked CL Key staking, providing superior retention compared to standard pinning methods. Fasteners are specified as Grade 8 Screws To Mil-Spec, guaranteeing the necessary tensile strength for safe operation under high-pressure conditions.

Designed specifically for 5.56 Caliber platforms, this BCG delivers consistent performance without compromising on material science. The combination of a hardened steel carrier and a low-friction bolt surface ensures smooth operation across various gas system lengths. Backed by a 1 Year Warranty, this component offers peace of mind for critical upper receiver builds.