EGW Marlin 917 and 982 scope bases offer the adaptability of a one-piece picatinny scope rail for your shotgun, eliminating the need for drilling or tapping. These bases are precision-machined from extruded 6061-T6 aluminum, featuring picatinny slot-and-rail spacing that facilitates quick and straightforward adjustments to eye relief, providing extensive flexibility in scope selection. They are pre-drilled to align with the factory scope mount holes on the firearm's receiver and are compatible with both picatinny and weaver scope rings. The lightweight tactical mounts incorporate a milled center channel to reduce weight. The full-width cross-slots are manufactured to meet MIL-STD-1913 specifications with a tolerance of +/- 0.002 inches. The package includes socket head Torx screws and a wrench. EGW advises applying 20 in-lb of torque and a drop of blue Loctite for secure mounting. The EGW Marlin 917 and 982 scope bases facilitate straightforward installation by aligning with factory mount holes, eliminating the need for drilling or tapping Offers adjustable scope options and eye relief settings, utilizing picatinny slot-and-rail spacing for enhanced customization and precision Fabricated from 6061-T6 aluminum for enhanced durability, this product includes all essential mounting hardware for seamless installation