All the classic details of the time honored original are reproduced in today's semi-auto Thompson. This Thompson configuration is the most popular firearm from Auto-Ordance, the original manufacturer of the Tommy Gun. The .45 caliber carbine features a 16-1/2" finned barrel with a compensator. The frame and receiver are machined from solid steel. The wood is genuine American walnut. Every Tommy Gun ships with a 30-round stick magazine, a 50-round drum magazine, and a free hard plastic case.