16" Chrome-Lined Barrel
Adjustable Four-Position Gas Regulator
Free-Floating Quad Rail Forend
6-Position Adjustable Stock
Flip-Up Front & Rear Sights
One of the most tested and proven weapons systems in the world achieves ultimate refinement with the introduction of the SIG516 rifle. With its Nitride-treated, military grade barrel and adjustable, four-position gas regulator, the 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. M1913 Picatinny flat top upper receiver. Flip-up iron sights.