A closed-bolt blowback-operated submachine gun, the Reising Model 50 saw action with the U.S. Marines in the Pacific as a substitute for the M1 Thompson, though they found their best success as defensive weapons for war-essential industries and as patrol carbines for American police forces. Blade front and elevation adjustable peep rear sights, with a flash hider/muzzle brake, cooling fins on the barrel, three-line Worcester address near the ejector port, and three-position selector/safety on the right side. Smooth pistol grip stock with a cocking lever on the underside, a canvas sling, and a ribbed plastic buttplate with H&H imprint. Two magazines total (one unmarked extended, one H&R marked in standard length) are included, along with three books: H&R Reising Submachine Gun Manual (Desert Publications 1993), The Reising Submachine Gun Story by Iannamico, and Reising Do Everything Manual by Pugliese.