SIG Sauer M400 Forge 5.56 Moss Green
SIG M400 Forge
The SIG SAUER M400-FORGE is a modern 5.56 NATO rifle engineered for shooters who demand reliability, precision, and performance. Built around a 16" cold hammer forged barrel and mid-length gas system, the M400-FORGE delivers exceptional durability and smooth, consistent operation in any environment.
Upgraded where it matters. Ready from day one.
At the heart of the rifle is a TriggerTech 3.5 lb two-stage flat blade duty trigger, delivering the kind of crisp, predictable break shooters typically upgrade to. Paired with the included ROMEO-MSR Gen II red dot optic, the M400-FORGE provides fast target acquisition and…

Specifications
| UPC | 798681744206 |
|---|---|
| Brand | SIG Sauer |
| Model | M400 Forge 5.56 Moss Green |
| Model Number | RM400-556N-16B-FORGE-MSGRN |
| Caliber | 5.56 |
| Series | M400 |
| Mfg Part Number | RM400-556N-16B-FORGE-MSGRN |
| NFA Thread Pattern | 1/2x28 |
| Barrel Length | 16 in |
| Capacity | 30 + 1 |
| Year Introduced | 2026 |
| Overall Length | 35.5 |
| Sights | Romeo-MSR- Gen II w/ 2 MOA Dot |
| Frame | Cerakote Aluminum |
| Finish | Cerakote Moss Green |
| Grip | Polymer |
| Weight | 6.8 lbs |
| Purpose 1 | Self Defense |
SIG Sauer is a prestigious firearms manufacturer known for its exceptional quality, precision engineering, and innovative designs. The company originated from a partnership between the Swiss company Schweizerische Industrie Gesellschaft (SIG) and the German firm J.P. Sauer & Sohn in 1985. This collaboration brought together Swiss precision and German engineering, creating firearms that quickly gained a reputation for reliability and excellence.
SIG Sauer's diverse product lineup includes pistols, rifles, and accessories that cater to a wide range of users, from military and law enforcement professionals to civilian enthusiasts. Notable models like the P320, P365, P226, and P938 have become synonymous with quality and performance. The P320, …
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