The Sig Sauer M400 Forge is an AR-style semi-automatic rifle built for range use, duty applications, and precision-oriented recreational shooting. It ships with a ROMEO-MSR Gen II 2 MOA red dot and a TriggerTech two-stage flat blade trigger for consistent, repeatable engagement. The platform pairs a 16 inch cold hammer-forged barrel and a mid-length gas system with an adjustable Magpul SL-K stock and an M-LOK handguard for modular accessory placement.
Key Specifications
- The rifle is chambered in 5.56 NATO.
- The barrel measures 16 inch and is cold hammer-forged.
- The trigger is a TriggerTech 3.5-pound two-stage flat blade.
- An optical sight included is the ROMEO-MSR Gen II 2 MOA red dot.
- The operating system is a mid-length direct impingement gas system.
- The rifle includes a 30-round polymer magazine.
- The stock is a Magpul SL-K 6-position adjustable stock.
- The twist rate is 1:7.
- The action type is semi-automatic.
- Overall extended length is 35.5 inch with a collapsed length of 32.25 inch.
The M400 Forge brings together a cold hammer-forged barrel, a tuned two-stage TriggerTech trigger, and a factory-mounted ROMEO-MSR Gen II optic in a familiar AR platform. Its combination of modular M-LOK attachment points, adjustable Magpul SL-K stock, and serviceable ergonomics make it well suited for precision-oriented range work, training, and general-purpose modern sporting rifle ownership. This configuration delivers proven components in a straightforward, service-oriented package.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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