Sig Sauer SIG516 G3 5.56 NATO | 16″ Barrel | 30rd

The SIG Sauer SIG516 G3 is a 5.56 Rem/5.56 NATO semi-automatic modern sporting rifle built around a short-stroke piston operating system and a 16-inch cold-hammer-forged threaded barrel. It includes a free-floating M-LOK handguard, fully ambidextrous controls and a Matchlite Duo curved trigger for consistent shot release. For an optic under $1,000, a Vortex Strike Eagle 1-6×24 pairs well with the SIG516 G3 for speed and practical-range precision. Typical applications include 3-gun competition and dedicated range training.

Product Specifications

• The caliber is .223 Rem/5.56 NATO.
• The barrel measures 16 inches.
• The action is Semi-Auto.
• The operating system uses a short-stroke piston with a 3-position adjustable gas system.
• The capacity is 30 rounds.
• The barrel material is cold hammer forged steel.
• The rifling twist rate is 1:7.
• The thread pattern is 1/2×28.
• The handguard is M-LOK free-floating.
• The stock type is Magpul synthetic.
• The receiver features a Picatinny rail.
• The overall length is 36 inches.
• The weight is 8 pounds.
• The finish is matte anodized.
• The UPC is 798681746118.

The SIG516 G3 blends a proven piston operating system with modern ergonomics: a threaded, cold-hammer-forged barrel, robust reinforced components in high-wear areas, and fully ambidextrous controls make it a capable platform for competitive shooters and serious range users. The free-floating M-LOK handguard keeps accessory options open while the Matchlite trigger provides a predictable break. Whether you are building a reliable range rifle or running magazine-fed competition stages, this configuration gives straightforward, high-utility performance without unnecessary complication.

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