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, "P/M" markings and cooling fins on the barrel, three-line Worcester address near the ejection port, and three-position selector/safety on the right side "PPD 15001" is stamped into the left side of the receiver, and "PPD 89" in white stencil on the right side of the stock; while not documented, these are most likely law enforcement inventory/rack numbers. Smooth pistol grip stock with a cocking lever on the underside and a lightly ribbed buttplate. Magazine absent.

Excellent, with 90% of the original parkerized finish, showing some light wear, spotting and handling marks. The stock is very fine, with mild scuffs and dings. Mechanically excellent. NOTE: This weapon is a National Firearms Act (NFA), fully transferable Class 3, which is registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives, (BATFE) that is classified as a "Curios or Relic" as defined in 27 CFR, 478.11. These weapons are still subject to the provisions of 18 U.S.C. Chapter 44 and 27 CFR part 479.