Product Description The FailZero AR9 9mm Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most 9mm AR-platform rifles and pistols. Built around an 8620 heat-treated (Mil-Spec comparable) carrier and finished in durable Salt Bath Nitride (Black), this BCG is designed to enhance wear and corrosion resistance for reliable performance. It is compatible with lowers designated for either Glock or Colt-style magazines and features a staked carrier guide (gas key), a 5.56 extractor, and a chrome firing pin. Trigger hammer is not included. Product Highlights Drop-in, fully assembled FailZero AR9 9mm bolt carrier group for AR-platform builds Salt Bath Nitride (Black Nitride) coating for improved wear resistance and corrosion protection Compatible with AR9 lowers using Glock or Colt-style magazines 8620 heat-treated carrier with staked carrier guide (gas key) for added durability Includes 5.56 extractor and chrome firing pin; does not include trigger hammer Specs Brand: FailZero Type: Bolt Carrier Group (BCG) Caliber: 9mm Finish/Coating: Black Nitride (Salt Bath Nitride) Carrier Material: 8620 heat treated Magazine Compatibility: Glock and Colt-style magazine lowers Includes: Staked carrier guide (gas key), 5.56 extractor, chrome firing pin Not Included: Trigger hammer Overall Dimensions (L x W x H): 11.00 in x 4.00 in x 1.75 in Weight: 1.00 lb UPC: 094922269836 Manufacturer Part Number: FZ-9MM-NITRIDE-BCG Disclaimer: 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 products manufacturer.