This scope and scope mount came off of a Finnish M39 Mosin Nagant Rifle. The screws simple press against the receiver to hold it in place, NO drilling or tapping required. It comes with the scope as well, a nice illuminated BSA 1-6x24mm Tactical Multi-Gun Scope, clear glass and in very nice condition. The scope alone retails for 189.99. Sold together. Thanks for looking.