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The M1A1 Thompson submachine gun on display at the Virginia War Museum. The M1A1, standardized in October 1942 as the United States Submachine Gun, Cal. .45, M1A1, could be produced in half the time of the M1928A1, and at a much lower cost. The main difference between the M1 and M1A1 was the bolt.
Auto-Ordnance Corporation was created by John T. Thompson in August 1916 with the backing of investor Thomas Ryan. In 1915 Thompson had found the Blish Lock patent of Commander John Blish, which was the operating principle of the first prototypes of the Thompson submachine gun and the Thompson Autorifle. In exchange for shares of the newly ...
The M1A1 Box that replaced it (June 1945 – 1950s and phased out in the early 1960s) was a little taller (11" Length × 3-13/16" Width × 7-19/32" Height), had a more durable rubber gasket, and held 250 belted or 275 linked rounds of .30-06 ammo. The M1A1 model can be distinguished from the earlier M1 by the different embossed text, which ...
Ordnance crest "WHAT'S IN A NAME" - military education about SNL. This is a historic (index) list of United States Army weapons and materiel, by their Standard Nomenclature List (SNL) group and individual designations — an alpha-numeric nomenclature system used in the United States Army Ordnance Corps Supply Catalogues used from about 1930 to about 1958.
M1A1 Thompson submachine gun. Model of 1921 Thompson; Model of 1928 and M1928A1 Thompson; M50 and M55 Reising; M1 and M1A1 Thompson; M3 and M3A1; Heckler & Koch MP5 (some variants) Machine guns M60 7.62mm machine gun. M1895 Colt–Browning machine gun; Hotchkiss M1909 Benét–Mercié machine gun; M1917 Browning machine gun; M1918 Browning ...
This is a list of United States Army fire control, and sighting material by supply catalog designation, or Standard Nomenclature List (SNL) group "F".The United States Army Ordnance Corps Supply Catalog used an alpha-numeric nomenclature system from about the mid-1920s to about 1958.
In the simplified WWII M1 Thompson re-design, the Blish locking block was removed without substantial change to the gun's function with the .45 ACP cartridge. The Blish principle did provide delay in the Thompson prototypes using the .45 Remington–Thompson and .30 Carbine cartridges which generate higher pressure than the .45 ACP, a pistol round.
Thompson submachine gun (American Lend-Lease and local production) [73] [74] M3 submachine gun (Lend-Leased to the National Revolutionary Army, along with the Thompson, to replace the outdated Chinese copies of the MP 18 and MP 28 submachine guns used during the Second Sino-Japanese War and the early years of the Chinese Civil War)