Ruger Laser joined the AR market back in 2009 with the launch of the Ruger AR 556 Accessories collection of semi-autos chambered for 5.56 NATO and also.223 Rapid eye movement. This line was followed by the launch of the SR-762 chambered for 7.62 x 51 mm NATO and.308 Victory. in 2013. These two-stage, piston-operated rifles have actually done well, supplying a desirable set of attributes, superior accuracy and also dependability.