Kaw Valley Precision 9mm Blowback Bolt Carrier Group Features The Kaw Valley Precision 9mm Blowback Bolt Carrier Group is machined from 8620 steel a material chosen for its strength and resistance to wear under the high cycle rates typical of pistol caliber carbines. Built to run in Glock or Colt-pattern 9mm AR platforms it gives builders a dependable carrier option when assembling or upgrading a 9mm PCC. A Nitride QPQ finish coats the carrier reducing friction during cycling while adding a layer of corrosion resistance that holds up to regular range use. This combination of steel construction and a hardened finish supports smooth reliable blowback operation shot after shot. A heavy firing pin retaining spring is included to support consistent reliable primer strikes across a high volume of rounds. At 14.5 ounces the carrier group is weighted appropriately for proper blowback timing in a 9mm platform helping the action cycle correctly with a wide range of ammunition. Made in the USA this bolt carrier group is manufactured to standards that builders can trust for a direct drop-in fit. PCC builders looking for a durable American-made carrier group will find this Kaw Valley Precision BCG a solid foundation for their 9mm build. Kaw Valley Precision 9mm Blowback Bolt Carrier Group Specifications Manufacturer: Kaw Valley Precision Model: 9mm Blowback Bolt Carrier Group Caliber: 9mm Material: 8620 Steel Finish: Nitride QPQ Weight: 14.5 oz Compatible Hosts: Glock Colt Pattern 9mm AR Country of Origin: USA Available At: GrabAGun