Sub-machine gun, H&R (Harrington and Richardson) Reising Model 50 .45" sub machine gun. It has a delayed blowback, closed bolt action. There were 12 and 20 round box magazines for this weapon. This type of weapons was issued to 2nd Battalion Seaforth Highlanders of Canada about 1943 during WW II as evidenced by a recruiting poster and brochure photos. The cocking handle is underneath the forestock. According to the website of Colin Stevens, this firearm was located in Case 6A Bottom in the old museum, circa 2008. See photo. DEACTIVATED. The bolt moves but jams at forward end. No magazine. The Reising submachine gun was manufactured by Harrington & Richardson (H&R) Arms Company in Worcester, Massachusetts, and was designed and patented by Eugene Reising in 1940. The two primary versions of the weapon were the Model 50 and the folding stock Model 55. Over 100,000 Reisings were ordered during World War II, and were initially used by the United States Navy, Marine Corps and the United States Coast Guard, though some were shipped to Canadian, Soviet, and other allied forces to fight the Axis powers. The Reising submachine gun was a very innovative weapon for its time featuring firepower, accuracy, excellent balance, lightweight and ease of manufacturing compared to the Thompson Model 1928 submachine gun, the leading American competitor of the time. But poor combat performance and favorable law enforcement use of the Reising forever mired the weapon in controversy.