One of the most tested and proven weapons systems in the world achieves ultimate refinement in the SIG516 rifle. With its Nitride treated, military grade barrel and adjustable, four-position gas regulator, the piston-driven SIG516 incorporates all of the most desirable mechanical improvements. Add to these a free-floating forend, and you have the most advanced, versatile AR-based rifle available. On Sale Now at CalibersUSA.com: visit: https://www.calibersusa.com/sig-sauer/sig-sauer-sig516-patrol-r516g216bp-43429
