The SIG SAUER M400 ROSE is a purpose-built modern sporting rifle chambered in the proven .223 REM/5.56 NATO cartridge, designed for shooters who demand reliable, mil-spec-grade performance from a 16-inch barrel platform. Built on SIG’s trusted M400 architecture with an ambidextrous safety and a 1:7″ twist rate optimized for a wide range of projectile weights, this rifle is ready for home defense, range training, or competitive use straight out of the box. It ships with two Magpul 30-round magazines and a 1/2″x28 threaded muzzle for suppressor or muzzle device compatibility.
Key Specifications
- The M400 ROSE operates on a semi-automatic action for reliable, consistent cycling.
- The barrel measures 16 inches with a black finish, balancing maneuverability and velocity.
- Chambered in .223 REM / 5.56 NATO for broad ammunition compatibility and wide availability.
- The 1:7-inch rate of twist stabilizes a wide range of bullet weights, from 55 to 77 grains.
- Ships with two Magpul 30-round magazines so you’re ready to run from the first range session.
- Magazine capacity is 30+1 rounds for a full combat-ready loadout.
- An ambidextrous safety selector accommodates left- and right-handed shooters equally.
- The threaded muzzle features a 1/2″x28 thread pattern, compatible with most standard suppressors and muzzle devices.
- Overall length is 43.5 inches, providing a full-size profile suited for a variety of shooting applications.
The M400 ROSE represents SIG SAUER’s commitment to delivering no-compromise quality in a modern sporting rifle platform. Whether you’re running drills at the range, building a home-defense setup, or outfitting for duty-ready applications, this rifle delivers the reliability and precision SIG SAUER is known for — backed by a complete package that includes everything you need to get started. Add a preferred optic, mount a muzzle device, and you have a ready-to-configure rifle built to SIG’s exacting standards.
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