Soviet weapons from 1930th:
Grohovskiy gun, for paratroopers, for shells or rockets:
Petropavlovskiy “rocket launcher”, 82 mm:
And, from S. A. Buturlin book, “Shotgun”, 1937 - “new A. G. Trofimov shotgun, in Tula”, semi-auto, system - with “прямая подача” (“pryamaya podacha”, maybe, “direct load”). “Обратная подача” (“obratnaya podacha”, “reverse load”) - it’s a about classic shotguns with tube magazine under barrel, or many machine guns, with rimmed cartridges, Kalashnikov PK, Maxim M1910, etc. “Прямая подача” - about weapons with standart boxed mafazines - for example, AK rifles, AR-15 rifles - or about machine guns, with belt mechanism, like a MG-34 or MG-42. “Shotgun with direct load” - it was, maybe, a) boxed magazine, b) magazine in butt (like a Evans, Sharps, etc.). I can’t found information about Trofimov and his shotgun.
1 Like