The classic details of the time honored original are reproduced in today's semi-auto thompson 1927-a1.This.45 caliber carbine features a 16.5" finned barrel and genuine american walnut woodwork.It has a blade front sight with an open rear adjustable sight.This commando model is has a pinned compensator for an 18" barrel length.The frame and receiver are machined from solid steel with a black parkerized metal finish.The walnut furniture has a durable, painted black finish.It includes one 20-round stick magazine and a black nylon sling.Metal Finish: Black ParkerizedAction: Semi-AutoCaliber: 45 ACPBarrel Length: 16.50"Capacity: 20+1Safety: LeverOal: 41"Weight: 13 lbsStock Description: Walnut Black PaintMuzzle: CompensatorReceiver Material: SteelSights: Blade Front/Fixed Battle RearBarrel Description: FinnedTwist: 1:16"Barrel Length Range: 16" to 16.99"Weight Range: 13 lbs to 13.99 lbsHand: RightStock Finish Group: BrownMetal Finish Group: Blued/Black