The SIG SAUER SIG516 G3 is a modern semi-automatic rifle that combines a proven short-stroke piston system with an adjustable gas system and high durability for reliable operation even under demanding conditions. Fully ambidextrous controls, a free-floating M-LOK handguard, and a quality Matchlite Duo trigger further enhance its versatility and practical performance.
The SIG SAUER SIG516 G3 represents the latest evolution of the proven SIG516 platform, combining more than a decade of operational experience with modern enhancements focused on reliability, durability, and user convenience. Chambered in 5.56×45 mm NATO (.223 Rem), this semi-automatic rifle is engineered to perform in the harshest environments while delivering the accuracy and modularity expected from a modern sporting rifle.
At the heart of the SIG516 G3 is a short-stroke piston operating system paired with an adjustable gas system, allowing the rifle to be tuned for different ammunition types, operating conditions, or accessory configurations. Compared to traditional direct-impingement systems, the piston design reduces fouling within the action and enhances long-term reliability during extended firing sessions.
The rifle is equipped with a 16-inch (406.4 mm) cold hammer forged barrel featuring a 1:7 twist rate, making it suitable for a wide range of 5.56 NATO projectile weights. The barrel is threaded 1/2"-28 and fitted with a factory-installed SIG Flash Hider-Compensator, designed to reduce visible muzzle flash while helping to minimize muzzle movement during rapid fire.
One of the defining features of the SIG516 G3 is its unique non-reciprocating rear and side charging handle system, allowing the rifle to be manipulated efficiently from multiple shooting positions without any charging handle movement during operation. To enhance durability, critical high-wear areas such as the cam path and feed ramp are reinforced with steel inserts for extended service life.
The rifle features fully ambidextrous controls, including the bolt catch, magazine release, safety selector, and charging handle, ensuring intuitive operation for both right- and left-handed shooters. A SIG Matchlite Duo Curved Trigger provides a clean and consistent trigger pull suitable for both professional and sporting applications.
Its free-floating alloy M-LOK handguard with integrated Picatinny rail offers extensive mounting space for optics, lights, lasers, and other accessories while preserving barrel harmonics for improved accuracy. Ergonomics are further enhanced by the six-position Magpul DT adjustable stock and an AR-compatible reduced-angle pistol grip.
The rifle measures 36.5 inches (927 mm) in overall length and 33 inches (838 mm) with the stock collapsed, with a width of 3.3 inches (84 mm) and a height of 7.8 inches (198 mm). Unloaded weight is approximately 7.7 lb (3.5 kg). The SIG516 G3 is supplied with one 30-round polymer magazine and stands as a highly refined piston-driven AR-platform rifle designed to deliver exceptional reliability, durability, and adaptability for professional, defensive, and sporting use.
Parameters:
• Caliber: .223Rem (5.56x45 NATO) • Barrel length: 16" (40.64 cm) • Overall length: 83.8 - 92.7 cm • Magazine: 30 rounds (1), AR-15 • Twist: 1:7" • Thread: 1/2x28 TPI • Weight: 3.5 kg • Color: Anodized black • M-LOK handguard • Picatinny rail • Barrel: Cold forged carbon steel, adjustable gas regulator • Trigger: SIG Matchlite Duo Curver Trigger • SIG Flash Hider-Compensator • Stock: Magpul DT 6-position with AR grip
Basic Rifle parameters
Barrel length:
16"
Weight:
3,5kg
Magazine capacity:
30+1
Firearm Purchase Permit:
B
Caliber:
5,56x45
Thread:
1/2"-28
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