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 ejection port, and three-position selector/safety on the right side. Smooth pistol grip stock with a cocking lever on the underside and a lightly ribbed buttplate, and "ETNA.POLICE" stamped on the left side; there are at least 2 towns in America named Etna, one in California and one in Ohio. Included with the SMG are a black leatherette transport case, five-cell treated canvas magazine pouch on a green web belt, and nine extra magazines.

Excellent, with 95% of the original blue finish, showing some light wear and handling marks. The stock is very good, with a number of shallow dents and scratches overall, and some splitting of the wood on the underside of the wrist. The accessories are very good overall. Mechanically excellent. b. 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.