Product DescriptionUpgrade your AR-9 build with the KAK Industry Enhanced 9mm Bolt Carrier Group (BCG), designed for smooth cycling and dependable performance with both Colt and Glock style magazine setups. Built around a steel weighted carrier and a durable nitride black finish, this BCG uses proven materials including an 8620 alloy steel carrier, a precision-machined 4130 gas key, and an 8740 steel firing pin to support long service life and consistent operation.Product HighlightsEnhanced 9mm AR bolt carrier group built for reliable cycling and long-lasting performanceSteel weighted carrier compatible with Colt and Glock style magazinesDurable 8620 alloy steel construction with a wear- and corrosion-resistant nitride black finishPrecision-machined 4130 steel gas key for secure, dependable function8740 steel firing pin for strength and durability under repeated useSpecsBrand: KAK IndustryProduct Type: Bolt Carrier Group (BCG)Platform: AR-9 / 9mm ARCaliber: 9mmFinish/Color: Black (Nitride)Carrier Material: 8620 alloy steelGas Key Material: 4130 steelFiring Pin Material: 8740 steelCompatibility: Colt and Glock style magazinesWeight: 0.96 lbManufacturer Part Number: MO-KAK9MMENHBCGUPC: 811163035729Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.