Sig Sauer M400 ROSE | 5.56 NATO 16″ | ROMEO5

The SIG M400 ROSE is a lightweight AR-style rifle chambered in the 5.56 NATO cartridge and built with input from ROSE members for improved ergonomics and handling. It features an M-LOK handguard, ambidextrous controls, and a Magpul SL multi-position telescoping stock to fit a range of shooters. A SIG ROMEO5 GenII red dot is included for quick target acquisition; for an aftermarket optic that pairs well, consider a Vortex SPARC AR red dot priced well under $1,000. Typical applications for this rifle include precision range practice and competition-style practical shooting.

Product Specifications

• The manufacturer is Sig Sauer.
• The model is M400 ROSE.
• The ATF model designation is SIGM400 ROSE.
• The caliber is .223 Rem / 5.56 NATO.
• The barrel measures 16 inches.
• The action is Semi-Auto.
• The rifle weighs 6.4 lbs.
• The handguard is a rose-engraved 10-inch M-LOK unit.
• The stock is a Magpul SL 6-position telescoping stock.
• The package includes a ROMEO5 GenII red dot.
• The finish is Black Anodized.
• Notable features include matte rose-gold controls and a rose-gold compensator/flash hider.
• The case included is a Rose Savior Bag.
• The UPC is 798681725229.

This rifle is built to be approachable and adaptable: the M400 ROSE balances a familiar AR platform with user-focused touches that make it easy to operate and maintain. Its combination of a lightweight build, ambidextrous controls, and an included ROMEO5 GenII red dot makes it well-suited to range-focused training and competitive shooting where quick sight picture and ergonomic setup matter.

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