KAK Industry Enhanced 9mm Complete Bolt Carrier Group

Fine-tune your AR-9 with the KAK Industry Enhanced 9mm Complete Bolt Carrier Group (BCG). This BCG is constructed using high-quality 8620 steel with a corrosion-resistant nitride finish for superior strength and smooth cycling. The gas key is 4130 machined billet steel and is properly staked, while the extractor is fully machined and phosphate-coated for lasting durability and reliable extraction. Plus, the firing pin is 8740 steel, properly heat-treated, and chrome-plated. Steel-weighted carrie