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, and a 5 3/4 inch section of scope rail has been added to the receiver tube. Included with the lot is a matching numbered MK Arms box, two extra magazines, assorted papers, spare grip, other small extra parts, and a Harris-style bipod.