Sig Sauer 516 G3 | 5.56 NATO | 16″ | 30rd | R516G3-556N-16B-BRZ

The Sig Sauer 516 G3 is a short-stroke piston-driven semi-automatic modern sporting rifle chambered in 5.56 NATO with a 16-inch cold hammer-forged barrel and bronze Cerakote finish. It features a free-floating M-LOK handguard, fully ambidextrous controls, and a Magpul DT polymer telescoping stock for adjustable ergonomics. For a practical optic under $1,000, the Vortex Strike Eagle 1-6×24 pairs well for close-to-medium range shooting and leverages the 516 G3’s capability without exceeding common optic budgets. Typical applications include range training and practical/competition shooting.

Product Specifications

• The manufacturer is Sig Sauer.
• The model is 516 G3.
• The manufacturer part number is R516G3-556N-16B-BRZ.
• The caliber is 5.56 NATO.
• The magazine capacity is 30 rounds.
• The barrel measures 16 inches.
• The barrel twist rate is 1:7.
• The barrel is made of cold hammer-forged steel.
• The action type is semi-automatic.
• The handguard is a free-floating M-LOK design.
• The receiver finish is bronze Cerakote.
• The stock is a Magpul DT polymer telescoping stock (black).
• The trigger is a Matchlite Duo Curved trigger.
• The overall length is 32.6 inches (collapsed) to 36 inches (extended).
• The UPC is 798681740970.

The 516 G3 combines a durable piston system and reinforced wear components with user-focused features such as ambidextrous controls and a threaded muzzle. Its configuration supports straightforward optics mounting and common AR-style accessories, making it suitable for shooters focused on consistent function and modularity. The bronze Cerakote finish provides a corrosion-resistant layer while maintaining a utilitarian appearance appropriate for range and match use.

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