Moriarti AR-9 9mm Nitride Bolt Carrier Group Glock Compatible MIL-SPEC Black Anodized. Crafted from MIL-SPEC 8620 steel and featuring an external extractor this BCG is built for high-performance operation. The QPQ salt bath nitride finish enhances corrosion resistance ensuring your BCG remains durable and smooth for thousands of rounds. This AR-9 BCG is fully heat-treated to ensure maximum strength and longevity. It's compatible with 9mm conversion kits and Glock-style magazine billet lowers making it an ideal choice for those building or upgrading their AR-9 platform. The dust cover compatibility and its weight of 14.9 ounces make this BCG a reliable robust choice for your next build. Specifications for Moriarti AR-9 9mm Nitride Bolt Carrier Group: Manufacturer: Moriarti Color: Black Fabric/Material: Steel Caliber: 9mm Luger Gun Make: AR Platform Gun Model: AR-9 Weight: 14.9 oz Features of Moriarti AR-9 9mm Nitride Bolt Carrier Group Material: MIL-SPEC 8620 steel for strength and durability. External Extractor for efficient extraction and cycling. Finish: QPQ Salt Bath Nitride for superior corrosion resistance and smooth cycling. Weight: 14.9 ounces ensuring optimal function and stability. Compatibility: Designed for Glock-style magazine billet lowers and 9mm conversion kits. Dust Cover Compatible for easy assembly and protection. Package Contents: Moriarti AR-9 9mm Nitride Bolt Carrier Group What firearm models does the manufacturer say Moriarti AR-9 9mm Nitride Bolt Carrier Group is compatible with? The manufacturer suggests that Moriarti AR-9 9mm Nitride Bolt Carrier Group is compatible with AR-9Moriarti MAR-9-BCG-NTR: AR-9 9mm Nitride Bolt Carrier Group Glock Compatible MIL-SPEC Black Anodized