The One Horse Express .22 LR pistol combines a 12-inch medium-profile barrel with the factory-configured Atrius Single Side FRS selector. Built in the USA, this configuration features a 1:12 twist rate, 1/2x28 muzzle thread, and thread protector. The pistol is equipped with a Mil-Spec buffer tube, THRiL RTG Rugged Tactical Grip, SBA3 stock, and standard charging handle. A 25-round .22 LR magazine completes the factory configuration. Specifications Manufacturer: One Horse Caliber: .22 LR Barrel Length: 12 inches Barrel Profile: Medium Muzzle Thread: 1/2x28 Twist Rate: 1:12 Muzzle Device: Thread Protector Selector: Atrius Single Side FRS Charging Handle: Standard Buffer Tube: Mil-Spec Grip: THRiL RTG Rugged Tactical Grip Stock: SBA3 Magazine: 25-round .22 LR Weight: 7.14 lbs. Country of Origin: U.S.A. Get it at BattleHawk Armory!