Originally manufactured by Smith & Wesson as the Model 76, which in turn was designed to fill the same niche as the Gustaf M/45 "Swedish K" SMG, the MK Arms MK760 is a lightweight and agile weapon for close quarters fighting and, in the initial S&W incarnation, was a go-to weapon for the American special warfare community in Vietnam. Brought to market in 1983, the passage of the 1986 Firearm Owners Protection Act killed both the 760 and MK Arms in general, resulting in a very limited window of transferable production. Protected post front and notch rear sights, with the MK Arms markings on the magazine well, a combination barrel nut and ventilated heat shield, ambidextrous "SAFE"/"SEMI"/"FULL" selector, and a checkered pistol grip. A left-folding buttstock with rubberized covering is installed. Included with the lot is a matching numbered MK Arms box, 12 extra magazines, hard case, soft case, two spare barrels, and a green web sling.

Excellent, retaining 95% original matte gray phosphate finish with light scratches and mild handling marks. The magazine catch needs adjustment, otherwise mechanically fine. 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) under the provisions of 18 U.S.C. Chapter 44 and 27 CFR part 479.