The SIG SAUER SIG516 G3 5.56 NATO Rifle delivers the proven reliability of a short-stroke piston operating system with modern enhancements designed for today's demanding shooters. Built upon the battle-tested legacy of the SIG516 platform and refined through years of real-world military and law enforcement feedback, the SIG516 G3 offers exceptional durability, reduced maintenance, and dependable performance in even the harshest operating environments.

At the heart of the rifle is a 16-inch cold hammer forged barrel chambered in 5.56 NATO with a 1:7 twist rate, paired with SIG SAUER's renowned adjustable short-stroke gas piston system. This system runs cleaner and cooler than traditional direct impingement rifles while allowing users to fine-tune gas settings for different ammunition, suppressor use, or mission requirements.

The SIG516 G3 features an innovative non-reciprocating rear and side charging handle system, allowing shooters to manipulate the rifle from either position without interference during firing. Fully ambidextrous controls—including the safety selector, charging handle, bolt catch, bolt release, and magazine release—make the rifle equally effective for right- and left-handed shooters.

Designed for hard use, the SIG516 G3 incorporates steel-reinforced high-wear components, including the cam path and feed ramp, increasing long-term durability. A free-floating M-LOK handguard provides a rigid platform for optics, lights, lasers, and accessories while enhancing accuracy. Additional premium features include the crisp SIG Matchlite DUO curved trigger, SIG Flash Hider Compensator, Magpul DT six-position stock, and AR-compatible reduced-angle grip.

Whether you're building a duty rifle, preparing for defensive use, or looking for a premium piston-driven sporting rifle, the SIG516 G3 delivers the legendary reliability and performance expected from SIG SAUER.

Features

• Proven short-stroke adjustable gas piston operating system
• 16" cold hammer forged 5.56 NATO barrel
• 1:7 twist rate
• Free-floating M-LOK handguard
• Rear and side non-reciprocating charging handles
• Fully ambidextrous controls
• Steel reinforced cam path and feed ramp
• Matchlite DUO curved trigger
• SIG Flash Hider Compensator
• Magpul DT six-position adjustable stock
• AR-compatible reduced-angle grip
• Includes one 30-round polymer magazine
• Made for dependable performance in adverse conditions