Nice original, "light refurb" as some describe
Tula sniper rifle from late 1944(ТС prefix). I have seen this one on POCO Military site I think...The stock is original, not laminate. I have one just like yours with ДС serial prefix. Your scope mount may or may not be original to this particular rifle, but it is Tula made or fitted...The left side of the barrel shank of your rifle is also stamped with scope's serial number which was added during it's "light refurbishment" process. The bottom mag cap looks original Tula made from thin sheet metal. Bet you it is a 2012 Molot import(as marked on the barrel under upper handguard). It is an original matching Tula sniper rifle in it's original glory. Happy Victory Day!