EGW Smith & Wesson K, L and N frame revolver scope bases offer the adaptability of a one-piece picatinny scope rail for your revolver, eliminating the need for drilling or tapping. These bases are precision-machined from extruded aluminum, featuring picatinny slot-and-rail spacing that facilitates quick and straight forward 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-rigid, 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. EGW's scope bases enhance S&W K, L, and N frame revolvers by adding picatinny rail functionality, eliminating the need for drilling or tapping Expertly crafted from 6061-T6 aluminum, this component is compatible with picatinny or weaver rings and allows for effortless adjustments to eye relief The package contains Torx screws and a wrench for installation, recommending 20 in-lb of torque and blue loctite for secure mounting