M2 Hyde
The Hyde-Inland M2 was a United States submachine gun design submitted for trials at Aberdeen Proving Ground in February 1941.An improved Hyde-Inland 2 was designated U.S. Submachine gun, Caliber .45, M2 as a substitute standard for the M1 Thompson in April 1942.The receiver was built from a steel forging and a seamless tubular section, which took extra time and effort to machine and finish, causing the US Army to adopt the M3 with a simple stamped sheet metal receiver instead.Like the American Thompson and Finnish Suomi designs, the M2 bolt was shaped with large diameter rear and slender front sections.You can help Wikipedia by expanding it.This article relating to submachine guns is a stub.