The KAK Industry bolt carrier group is engineered for compatibility with 6.5 Grendel, .22 ARC and 6mm calibers, providing versatile functionality for a range of applications. This component is finished in a durable black coating, ensuring enhanced resistance to wear and corrosion. Precision-machined to exacting standards, the bolt carrier group ensures reliable cycling and optimal performance under various operational conditions. Designed for seamless integration, it supports efficient assembly and maintenance, making it an ideal choice for professionals seeking robust and dependable performance in their firearm systems. Profile - fully automatic profile carrier with accurate sear trip placement The firing pin is machined from 8740 steel, precision ground, appropriately heat-treated and chrome-plated Cam pin - phosphate finish Enhanced machined steel extractor with a phosphate finish Ejector - S7 tool steel ejector and extractor retaining pin Gas key - constructed from 4130 steel with a phosphate finish, precision staked using our hydraulic staking machine and chrome-lined with a phosphate finish Type II bolt face For 6.5 Grendel, 22 ARC and other 6mm conversions The carrier is precision machined from aircraft-grade, bearing-quality 8620 steel It undergoes heat treatment, is ground to exact specifications and features a chrome-lined phosphate finish The bolt is machined from aircraft-grade, bearing-quality 9310 steel It undergoes proper heat treatment, precision grinding and is finished with a phosphate coating Additionally, it is subjected to magnetic particle inspection (MPI) testing