KNIGHT ARMAMENTS CORPORATION "STONER" SR50
The Stoner SR50 rifle was originally designed in 1996, the goal of the company was to produce a semi-automatic 50-caliber gas operated rifle to compete with such models as the Barrett M82A1. The design itself makes use of a tubular steel receiver with the safety arrangement of the AR15/M16 rifles. The weapon utilizes a muzzle brake to reduce recoil and is fitted with the standard M60 General Purpose Machinegun bipod to help stabilize the rifle for long range shooting. The overall design was influenced by the German WW2-era FG-42 rifle, as such the magazine on the SR50 feeds from the side of the receiver. One unexpected benefit from this is that it does allow the shooter to reload slightly easier when firing from the bipod as the magazine does not have to clear the ground or other protrusions.
Photo and information from: PIERANGELO TENDAS