Developed just prior to World War II, the Reising line of pistol-caliber weapons was envisioned as a replacement or substitute for the then-standard Thompson line of SMGs. While the Army didn't bite, having a good number of Thompsons and a substitute in the M3, the Marine Corps was hungry enough to put out a contract order. Two models (the full length 50 and the compact 55 for airborne) were delivered to the USMC, and a third, the semi-automatic Model 60, was marketed for plant defense and police use. This particular Model 60 is finished in blue, with a "PS" stamp on the rear of the barrel, casehardened two-position safety switch and the three-line address, model and caliber markings on top of the frame. Smooth pistol grip stock, flat steel buttplate and a tan canvas sling.