EGW Mossberg 500, 590, 835, 930 and 935 post-1997 Heavy Duty 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 aluminum, featuring picatinny slot-and-rail spacing that facilitates quick and straightforward adjustments to eye relief, providing significant flexibility in scope selection. They are pre-drilled to align with the factory scope mount holes on the gun's receiver and are compatible with both picatinny and weaver scope rings. The Heavy Duty mounts are designed to be 0.10 inches lower than the lightweight mounts, reducing weight and positioning your optic closer to the barrel centerline for enhanced accuracy. The full-width cross-slots are manufactured to MIL-STD-1913 specifications with a tolerance of +/- 0.002 inches. Constructed from ultra-rigid extruded 7075-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 optimal installation.

• EGW Mossberg scope bases allow for rapid, drill-free installation of picatinny or weaver rings on Mossberg 500, 590, and 835 shotguns manufactured after 1997
• Expertly crafted from 7075-T6 aluminum for enhanced durability, featuring a low-profile design to optimize accuracy
• The package contains all essential mounting hardware, complete with recommended torque specifications and loctite, ensuring a secure installation