StG45

The Mauser Sturmgewehr 45 (aka StG45(M), literally "Storm Rifle" or "Assault Rifle" 1945) was a prototype assault rifle developed by Mauser for the Wehrmacht at the end of World War II, using a roller-delayed blowback mechanism. It fired 7.92x33mm (7.92 mm Kurz) ammunition at a cyclic rate of around 450 rounds per minute.

Overview

The Sturmgewehr 45 was intended to replace the Sturmgewehr 44 assault rifle, because the latter was rather expensive and time-consuming to produce. Compared to the StG44's cost of 70 Reichsmarks, the StG45(M)'s calculated cost was 45 Reichsmarks. Parts for only 30 complete rifles were produced before the war ended.

While the StG45(M) was intended to use the same 30-round magazine as its predecessor, the rifle is commonly pictured with the 10-round magazine designed for the Volksturmgewehr. The shorter magazine was used by Mauser engineers during testing, as its lower profile was easier to use when test-firing at the Mauser facility range.

Post-WW2 developments

The German technicians involved in developing the Sturmgewehr 45 continued their research in France at CEAM. The StG45 mechanism was modified by Ludwig Vorgrimler and Theodor Löffler at the Mulhouse facility between 1946 and 1949. Three versions were made, chambered in .30 Carbine, 7.92x33mm Kurz as well as the 7.65x35mm cartridge developed by Cartoucherie de Valence and adopted in 1948. A 7.5x38mm cartridge using a partial aluminium bullet was abandoned in 1947. Löffler's design, designated the Carabine Mitrailleuse Modèle 1950, was retained for trials among 12 different prototypes designed by CEAM, MAC, and MAS. Vorgrimler later went to work at CETME in Spain and developed the line of CETME automatic rifles.

Germany eventually purchased the license for the CETME design and manufactured the Heckler & Koch G3 as well as an entire line of weapons built on the same system, one of the most famous being the MP5.

A few other post-World War II weapons used the roller-delayed locking system, such as the SIG 510.

Sources

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