Please be as specific as possible when letting us know what is missing or incorrect. For example, say "this game's trophy difficulty should be 8/10", with a link to a website corroborating this difficulty estimate (if possible), not "this game's trophy difficulty is wrong".
The HJ 7.62 is a bolt-action sniper rifle issued in small numbers to the Chinese Army, Police and to Public Security Police forces. Chinese mercenaries working for private security companies are the likely source supplying the Syberian black market.