The SIG516 G3 blends modern enhancements with a proven, battle-tested design. Inside the rifle, a short-stroke piston with an adjustable gas system keeps flawless operation with the ability to tune the gas settings. Featuring a cold hammer forged barrel; rear and side non-reciprocating charging handle allows the rifle to be easily operated in any manner; steel-reinforced components for high-wear areas (cam path and feed ramp); fully ambidextrous controls, including the bolt catch, magazine catch, safety and charging handle; SIG Matchlite DUO curved trigger; SIG flash hider compensator and a free-floating M-LOK handguard.