The LWRC IC DI 300BLK is a semi-auto pistol featuring a 10.5-inch barrel and chambered in .300 AAC Blackout. This model includes a 30-round magazine and has an overall length of 43 inches. The 1-in-7 twist rate enhances stability for the projectile.Key FeaturesIncluded Magazines: Ships with one 30-round magazine.Barrel Length: Fitted with a 10.5-inch barrel.Action: Operates with a semi-auto action.ATF Type: Classified as a pistol.