All the classic details of the time honored original are reproduced in today's semi-auto thompson 1927-a1.The deluxe has a frame and receiver machined from solid steel, fixed buttstock, pistol grip and vertical foregrip.Its receiver also has a blade front sight with an open rear adjustable.The finned barrel features a cutts compensator.This model has an 18" barrel, case hardened metal finish and a 20-round sitck magazine.Metal Finish: Case HardenedAction: Semi-AutoCaliber: 45 ACPBarrel Length: 18"Capacity: 20+1Oal: 41"Weight: 13 lbsStock Description: American WalnutMuzzle: CompensatorReceiver Material: SteelSights: Blade Front, Adjustable RearBarrel Length Range: 18" to 18.99"Weight Range: 13 lbs to 13.99 lbsHand: RightStock Finish Group: BrownMetal Finish Group: Color Case Haened