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.