Feature rich, high-quality, and affordable, Foxtrot Mike Products offer cutting edge solutions utilizing the highest quality materials and manufacturing processes available.This Premium .45 ACP Bolt Carrier Assembly is compatible with all GLOCK style AR builds. Maintaining a harder core than standard 8620 steel, this carrier is machined from 8620H. OD ground prior to machining in a pre-hardened state for improved tolerances post machining and coating. A long duration salt bath nitride finish is applied for a long service life and superior corrosion resistance.Features: 8620H rated steel Salt bath nitride finish Ramped to accommodate both MIL-SPEC and 9mm hammers Premium 17-4 stainless steel firing pin Forged, precision machined extractor M16 profile Manufactured with ISO:9001 and AS:9100 quality certifications Cotter pin firing pin retainer One piece design Made in the U.S.A.