EGW Ruger #1 varmint scope bases offer the adaptability of a single-piece picatinny scope rail for your shotgun, eliminating the need for drilling or tapping. These bases are precision-engineered from extruded 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 MIL-STD-1913 specifications with a tolerance of +/- 0.002 inches. Constructed from ultra-durable, extruded 6061-T6 aluminum, 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 Ruger #1 Varmint scope bases facilitate rapid and adaptable scope adjustments with a single-piece picatinny rail crafted from precision-machined extruded aluminum, eliminating the need for drilling Engineered to align with factory scope mount holes on Ruger #1 receivers, this mount accommodates both picatinny and weaver rings for versatile scope compatibility The bases are lightweight, featuring a milled center channel for weight reduction They include Torx screws and a wrench for installation, with a recommended torque of 20 in-lb and the use of blue loctite