Original Soviet Tula Arsenal production SKS. Triangle Tula markings. Pre-1956 production most collectible. Designed by Sergei Simonov, the first successful Soviet assault rifle cartridge semi-auto. Type: Rifle Action: Semi-Automatic Caliber: 762x39mm Capacity: 10 Year introduced: 1945, Russia Weight: 160 oz Overall length: 40.2" Status: Discontinued Military use: Yes Intended use: Military, Collector