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. This model features a 20 round stick magazine and a 50 round drum.#html-body [data-pb-style="62DF82891C9A5"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF82891C9B1"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}