The EGW Springfield 03A3/03A4 Heavy Duty Steel 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 hardened steel, featuring picatinny slot-and-rail spacing that facilitates quick and straightforward adjustments to eye relief, while 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 Heavy Duty (HD) mounts are designed to be 0.10 inches lower than the Lightweight mounts, reducing weight and positioning the optic closer to the barrel centerline to enhance accuracy. The full-width cross-slots are manufactured to MIL-STD-1913 specifications with a tolerance of +/-0.002 inches. Constructed from ultra-rigid 4140 carbon steel, these bases are pre-hardened to RC 35-35 prior to machining. 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.

The EGW Springfield 03A3/03A4 steel scope bases facilitate rapid adjustments to eye relief and scope selection, compatible with picatinny or weaver rings
Precision-machined from hardened 4140 carbon steel, the bases ensure durability and accuracy, featuring a 0.100 lower profile for heavy-duty mounts
The installation process is simplified with pre-drilled holes compatible with factory mounts on the receiver
It includes Torx screws, a wrench, and recommends applying 20 in-lb of torque with blue loctite

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