All the classic details of the time honored original are reproduced in todays semiauto Thompson 1927A1. 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 Deluxe SemiAuto model has a permanently affixed Cutts compensator retaining the 16.5" overall barrel length. The frame and receiver are machined from solid steel with a blued metal finish and a detachable buttstock pistol grip and vertical foregrip. It includes one 20round stick magazine."