Auto Ordnance T5 1927A1 Deluxe Carbine SA 45 ACP 16.5″” 30 1 American Walnut Stk Blk T1/T5, all the classic details of the time honored original are reproduced in today’s semi-auto Thompson. The frame and receiver are machined from solid steel. The wood is genuine American walnut. This .45 caliber carbine features a 16 1/2″” finned barrel, compensator and is available with a blued steel receiver. T1-C, the semi-auto “”Commando””, features parkerized metal and all wood stock, rear grip and horizontal forend in a durable black finish.