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The Sturmgewehr 45, a prototype assault rifle developed by Mauser in 1945, at the end of World War II. It was too late to enter German military service. The StG45(M) is chambered in 7.92×33mm Kurz, utilizing roller-delayed blowback firing mechanism, having moderate relatively relaxed fire rate of 450 RPM. This prototype would later serving as what would become the later CETME designs and the famous G3 battle rifle including its derivatives developed by Heckler and Koch.
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