The Ruger SR-762. Sturm, Ruger & Company, Inc. (NYSE: RGR) is pleased to announce the new Ruger SR-762, bringing the .308 Win./7.62 NATO cartridge to the popular SR-556 family of rifles. The SR-762 offers the downrange authority of the .308 cartridge in a two-stage, piston-driven rifle that runs cooler and cleaner than traditional gas-driven AR-style …