This UTG Mosin Nagant no drill scope mount is precision machined from aircraft grade aluminum for maximum strength. Mosin Scope features double locking system with zero gaps tight tolerances for a strong secure fit and excellent zero retention capabilities for all accessories installed on the two side tactical rails. This mount has been intensely tested for extreme performance. Features two steel adapters to fit on rear sight for full length and carbine Mosin Nagant rifles. Extended top rail with 17 slots for flexible eye relief adjustment. The two tactical side rails are fully removable for shooter options and have 12 slots for additional accessories such as lasers and tactical flash lights . Friendly simple installation with no gunsmith required. Turn your old Mosin Nagant rifle into a long range sniper hunting rifle great for hunting. Fits Russian, Hungarian, Chinese, Polish, and finnish models including: 38, 44, M28, 53, M27, M28 models 91, 91/30, 91/38, 91/59. Limited lifetime warranty.