Thompson 1927A-1 Deluxe Semi-Auto Case Hardened Finish with Clear protective coat. Shipped with a 20 round stick magazine. – Caliber: .45 ACP – Barrel: 16.5 Finned (with compensator 18) – Weight: 13 lbs. – Length: 41 overall – Sight: Blade front open rear adjustable – Finish: Case Hardened with clear protective coat – Stock: Walnut fixed stock and vertical foregrip – Magazines: 1×20 rd Stick – Warranty: 1 year