Built short, runs strong. The SIG516 G3 expands the platform with a compact 11.5" short-barreled configuration that delivers proven piston-driven performance in a highly maneuverable package. It carries forward everything the SIG516 G3 is known for — short-stroke piston reliability, fully ambidextrous controls, and a free-floating M-LOK handguard — in a shorter, faster-handling form built for hard use.
At its core is a 3-position adjustable gas system that lets you tune the rifle for optimal performance across different ammunition types and operating environments, including suppressed use. Steel-reinforced components in high-wear areas enhance durability, while rear and side non-reciprocating charging handles give you flexible, intuitive manipulation from either side.
An 11.5" cold hammer-forged barrel with a 1:7 twist and 1/2x28 threads pairs with SIG's Flash Hider-Compensator to keep the rifle controllable, and the Matchlite Duo curved trigger delivers a clean, consistent press. Rounded out with a 6-position Magpul stock, an AR-compatible reduced-angle grip, and a full M-LOK/Picatinny mounting platform, the SIG516 G3 SBR is a compact, piston-driven package engineered for reliability and control.
Highlights
- Short-stroke piston operating system for clean, reliable cycling
- 3-position adjustable gas system — tunable for ammo, environment, and suppressed use
- 11.5" cold hammer-forged steel barrel, 1:7 twist, 1/2x28 threads
- SIG Flash Hider-Compensator
- Free-floating M-LOK handguard
- Rear and side non-reciprocating charging handles
- Fully ambidextrous controls; forward assist
- Steel-reinforced components in high-wear areas
- Matchlite Duo curved trigger; 6-position Magpul stock
- Ships with (1) 30-round polymer AR-15 magazine
- Backed by the SIG SAUER Infinite Guarantee
Technical Data
| Spec | Detail |
|---|---|
| Model / SKU | R516G3-556N-11B-SBR |
| Firearm Type | Rifle (SBR) |
| Caliber | 5.56 NATO |
| Barrel Length | 11.5 in / 292.1 mm |
| Barrel Material | Cold hammer-forged steel |
| Twist Rate | 1:7 |
| Threads | 1/2x28 tpi, tapered shoulder |
| Muzzle Device | SIG Flash Hider-Compensator |
| Action | Semi-auto |
| Operating System | Short-stroke piston, 3-position adjustable gas |
| Stock | 6-position Magpul |
| Grip | AR-compatible reduced angle |
| Trigger | Matchlite Duo, curved |
| Forend / Rail | Alloy handguard; M-LOK / Picatinny |
| Magazine | AR-15; (1) 30rd polymer included |
| Color / Finish | Black anodized |
| Overall Length | 31.8 in / 808 mm |
| Collapsed Length | 28.5 in / 724 mm |
| Overall Width | 3.1 in / 79 mm |
| Height | 7.9 in / 201 mm |
| Weight | 7.3 lb / 3.31 kg (with magazine) |
| Forward Assist | Yes |
| Product Specs | |
| Action | Semi Auto |
| Barrel Length | 11.5" |
| Capacity | MULTI |
| Color | Black |
| Finish | BLACK |
| Front Sight | N/A |
| Gas System | Gas Piston |
| Overall Length Collapsed | 28.5 in / 724 mm |
| Overall Length Extended | 31.8 in / 808 mm |
| Rear Sight | N/A |
| Rifle Lower | Billet Steel |
| Rifle Upper | Billet Steel |
| Special Purpose | Carbine |
| Weight | 7.3 lb / 3.31 kg |
Sig Sauer
Talos Defense Systems official Distributor in Greece for SIG SAUER. SIG headquartered in Newington, New Hampshire, is an ISO 9001 certified company employing over 3,000 people. It is the largest member of a global business group of firearms manufacturers that includes J.P. Sauer & Sohn and Blaser, GmbH. in Germany.
This global network of companies provides SIG SAUER with a world-class knowledge base for firearms, unparalleled expertise in design, and extensive production capacity, enabling it to respond quickly and effectively to changing market conditions and the needs of military, law enforcement, and commercial markets worldwide.
