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 or aluminum. 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. Specifications: Overall Length: 41″ Weight: 13 lbs Sights: Open Adjustable Rear, Pinned Blade Front Twist: 1:16″ Additional Info: Accepts Drum and Stick Mags # of Mags: 1x50rd and 1x20rd