Mauser Sturmgewehr 45 Country Germany Type Assault rifle Manufacturer Mauser Introduction 1944 Specifications Weight 5.22 kg (11.5 lb) Length 940 mm (37 in) Barrel length 419 mm (16.5 in) Cartridge 7.92x33mm Kurz Action Roller-delayed blowback Rate of fire 350-450 rounds/min Muzzle velocity 685 m/s (2,247 ft/s) Effective range 300 m Feed system 10 or 30-round detachable box magazine Sights Rear: V-notch; front: hooded post

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.

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. The German technicians involved in developing the Sturmgewehr 45 continued their research in France at AME, postwar.