Sig Sauer 516 G3 SBR 5.56 11.5' Barrel 30-Rounds

Sig Sauer 516 G3 SBR Features

The 516 G3 SBR is built around a short-stroke piston operating system with a 3-position adjustable gas system, providing cleaner, cooler, and more reliable cycling than direct impingement alternatives across a wide range of ammunition and suppressor configurations. Chambered in 5.56 NATO with an 11.5-inch cold hammer-forged barrel at a 1:7 twist rate and FNC finish, the 516 G3 SBR delivers consistent accuracy and barrel longevity backed by steel-reinforced components at all high-wear areas throughout the platform. A 1/2x28 threaded muzzle ships with a SIG Flash Hider Compensator and provides a straightforward foundation for suppressor and muzzle device upgrades.

The short-stroke piston SBR features fully ambidextrous controls including the safety, magazine release, bolt catch, and charging handle, accommodating left- and right-handed shooters without modification or aftermarket parts. A 6-position Magpul DT stock provides a familiar, adjustable length of pull across multiple shooter sizes and load-out configurations, while the AR-compatible reduced angle pistol grip delivers a comfortable, ergonomic firing position. The free-floating M-LOK handguard provides a rigid, interference-free barrel relationship for consistent accuracy while offering broad accessory compatibility across lights, lasers, grips, and other tactical attachments.

Sig Sauer engineered the 516 G3 SBR around the MatchLite Duo curved trigger for a refined, consistent pull that improves shot-to-shot accuracy in a platform designed for both precision and rapid fire applications. The collapsed overall length of 28.5 inches and extended length of 31.8 inches give the 516 G3 SBR a highly manageable footprint for close-quarters use, vehicle operations, and any application where a compact but hard-hitting 5.56 NATO SBR is required. For tactical shooters who demand piston-driven reliability, full ambidextrous controls, and Sig Sauer&##39;s build quality in a registered short-barreled rifle configuration, the 516 G3 SBR is a definitive choice.

Sig Sauer 516 G3 SBR Specifications

• Manufacturer: Sig Sauer
• Model: 516 G3 SBR
• Caliber: 5.56 NATO
• Capacity: 30+1
• Action: Semi-Auto
• Operating System: Short-Stroke Piston
• Gas System: 3-Position Adjustable
• Barrel Length: 11.5"
• Barrel Material: Cold Hammer-Forged Steel
• Barrel Finish: FNC
• Twist Rate: 1:7"
• Thread Pattern: 1/2x28
• Muzzle Device: SIG Flash Hider Compensator
• Frame Material: Alloy
• Frame Finish: Black Anodized
• Handguard: Free-Floating M-LOK
• Stock: 6-Position Magpul DT
• Grip: AR-Compatible Reduced Angle Pistol Grip
• Trigger: MatchLite Duo Curved
• Controls: Fully Ambidextrous
• Charging Handle: Rear and Side Non-Reciprocating
• Overall Length Collapsed: 28.5"
• Overall Length Extended: 31.8"
• Height: 7.9"
• Width: 3.1"
• Weight: 7.3 lbs
• Magazines Included: 1 x 30-round
• NFA: Short-Barreled Rifle, NFA Rules Apply