A militarized answer to the PSG1, the 7.62 x 51 mm MSG90A1 has many of the same features found on the PSG1A1, but weighs only 14 pounds (6.4 kilograms) and is available at a lower cost. Accuracy is sub-MOA with match ammunition.

A detachable flash hider suppresses visual signature during firing and optional screw-on sound suppressors can also be attached. The polygonal barrel is weighted at the muzzle to aid harmonic stabilization of barrel whip for increased accuracy. An Anschutz T-way on the forend allows for easy installation of a Harris bipod or other accessories.

The MSG90 has adjustable mechanical sights and an optional 10X Hensoldt telescopic sight on a quick detachable scope mount.