7.62x39mm. 20.5" barrel length. SN: 52012. Blued metal finish with polished bolt set in aftermarket black synthetic stock with pistol grip, checkering to grip and forend, and a sidefolding stock. Short stroke piston driven gas operated rifle using a tilting bolt and fed by an internal box magazine charged with stripper clips. Item mounts standard adjustable tangent rear and post and globe front sights, and an underfolding blade bayonet. Most serial numbers match but triggerguard does not. Left receiver struck with importer marking reading NORINCO SKS 7.62X39 CHINA/KSI, POMONA, CA. Left stock features molded PATENT PEND mark.