Ruger SR-556: Ruger’s New Piston Driven AR-15
Ruger announced a new piston-driven AR-15 rifle: the Ruger SR-556. Announced at the NRA convention, the SR-556 is a completely new line for Ruger, and part of an obvious effort to redefine the company. The SR-556 has a host of quality features, the most significant of which is the two-stage piston system. But, in a…