EGW Springfield 03A3 and 03A4 Heavy Duty scope bases offer the adaptability of a one-piece picatinny scope rail. These bases are precision-engineered 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 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 the optic closer to the barrel centerline, thereby enhancing accuracy. The full-width cross-slots are manufactured to MIL-STD-1913 specifications with a tolerance of +/- .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 performance.

The EGW Springfield 03A3/03A4 single-piece picatinny base is meticulously crafted to offer versatile scope options and adjustable eye relief
The ultra-rigid 7075-T6 aluminum construction enhances accuracy by maintaining the optic's proximity to the barrel centerline
The product includes full-width cross slots designed to MIL-STD 1913 specifications and is supplied with essential mounting hardware, such as Torx screws and a wrench

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