Sig Sauer SIG516 G3 5.56 NATO 16" Short-Stroke Piston Rifle M-LOK Black

SIG Sauer SIG516 G3 5.56 NATO 16" Short-Stroke Piston Rifle

The SIG Sauer SIG516 G3 brings the proven 516 platform into its next generation, combining a rugged short-stroke piston operating system with modern controls, enhanced ergonomics, and premium components. Chambered in 5.56 NATO and built around a 16-inch barrel, the SIG516 G3 is engineered for shooters looking for a durable, reliable piston-driven AR platform.

Building on more than a decade of real-world experience with the SIG516 series, the G3 incorporates an adjustable gas system, fully ambidextrous controls, rear and side charging handles, a free-floating M-LOK handguard, and steel reinforcement in high-wear areas.

Short-Stroke Piston Operating System

At the heart of the SIG516 G3 is its short-stroke piston operating system. Instead of relying on a traditional direct-impingement arrangement, the SIG516 uses a piston-driven system designed to deliver dependable operation in demanding conditions.

The rifle also incorporates an adjustable gas system, allowing the operating system to be tuned for different shooting configurations and conditions.

Rear & Side Charging Handles

One of the standout features of the SIG516 G3 is its versatile charging system. The rifle incorporates both rear and side non-reciprocating charging handles, providing multiple options for manipulating the action.

This configuration combines familiar AR-style operation with the additional accessibility of a side charging handle.

Fully Ambidextrous Controls

The SIG516 G3 features fully ambidextrous controls, providing convenient operation from either side of the rifle. Combined with its multiple charging handle locations, the G3 offers a modern control layout designed around efficient firearm manipulation.

16" Threaded 5.56 NATO Barrel

The SIG516 G3 is chambered in 5.56 NATO and equipped with a 16-inch barrel. The muzzle uses the common 1/2x28 thread pattern and comes equipped with a factory SIG flash hider/compensator.

Free-Floating M-LOK Handguard

A free-floating M-LOK handguard provides a modern interface for compatible accessories while keeping accessories mounted independently of the barrel. The handguard provides ample space for configuring the rifle with compatible lights, sling hardware, grips, and other rail-mounted equipment.

Matchlite Duo Curved Trigger

The SIG516 G3 comes equipped with SIG's Matchlite Duo curved trigger, giving this configuration an upgraded trigger system straight from the factory.

A Magpul DT adjustable stock completes the rear of the rifle and provides a familiar, comfortable interface with adjustable length of pull.

Key Features

• SIG Sauer SIG516 G3
• Chambered in 5.56 NATO
• 16" barrel
• 1/2x28 threaded muzzle
• SIG flash hider/compensator included
• Short-stroke piston operating system
• Adjustable gas system
• Free-floating M-LOK handguard
• Rear non-reciprocating charging handle
• Side non-reciprocating charging handle
• Fully ambidextrous controls
• Steel-reinforced components in high-wear areas
• Matchlite Duo curved trigger
• Magpul DT adjustable stock
• 30-round capacity
• One 30-round magazine included
• Black anodized finish

Specifications

Adjustable Piston System

The combination of a short-stroke piston and adjustable gas system is one of the defining characteristics of the SIG516 G3. The system is designed to provide reliable cycling while giving the shooter additional control over the rifle's operating characteristics.

SIG also incorporates steel-reinforced components in high-wear areas, supporting the G3's emphasis on long-term durability and demanding use.

Modernized SIG516 Controls

The G3's combination of fully ambidextrous controls and rear and side non-reciprocating charging handles distinguishes it from more conventional AR configurations. Shooters retain familiar AR-style ergonomics while gaining additional options for operating the action.

What's Included

• SIG Sauer SIG516 G3 5.56 NATO Rifle
• SIG Flash Hider / Compensator
• Magpul DT Adjustable Stock
• (1) 30-Round Magazine
• Factory Documentation

Product Image Notice: Any optic, suppressor, weapon light, sling, bipod, foregrip, or other accessory shown in product images is not included unless specifically listed in the What's Included section above.

Why Choose the SIG Sauer SIG516 G3?

The SIG516 G3 combines the familiar ergonomics of an AR-style rifle with a short-stroke piston operating system and adjustable gas system. Its 16-inch 5.56 NATO barrel, free-floating M-LOK handguard, fully ambidextrous controls, dual charging handle arrangement, Matchlite Duo trigger, SIG flash hider/compensator, and Magpul DT stock create a feature-rich evolution of SIG Sauer's proven 516 platform.