does the u.s military carry a 556 or 762
The SR-556 represents one of the latest gas-piston ARs introduced into the U.S. market. I do find it indicative that the ultimate decision came down to introduce a piston-driven AR rifle versus a traditional impingement design.he same pattern of design is followed with the SR-556âs big brother, the SR-762. Rugerâs SR-556 product line is comprised of four model types: Standard, Carbine, E-Model and Varmint Target. The flagship of the Ruger SR-556 lineup is the Standard model.