The Sig Sauer M400 ROSE in .223 Rem/5.56 NATO (brand part no. RM40016BROSER5X210) is a lightweight semi-automatic AR-platform rifle engineered from the ground up to meet the needs of the female shooter, built around a 16-inch barrel with a 1:7-inch twist at the direct request of ROSE program members. Sig Sauer equips the rifle with a ROSE-stylized Romeo5 GEN II red dot sight, an M-LOK handguard, and fully ambidextrous controls for left- and right-handed shooters, fitting an adjustable 6-position Magpul SL stock that tailors to any shooter. The rifle feeds from two included 10-round Magpul magazines and ships with a Rose combo lock, a Rose Savior bag, and three 5.56 dummy rounds. Among AR-platform rifles in the AR rifles category, the M400 ROSE favors shooters who want an easy-operating, low-recoil AR platform built specifically for them.

Key Specifications

• Chambered in .223 Rem/5.56 NATO with a 1:7-inch rate of twist.
• Features a 16-inch barrel.
• Includes a ROSE-stylized Romeo5 GEN II red dot sight.
• Wrapped in an M-LOK handguard.
• Features fully ambidextrous controls for left- and right-handed shooters.
• Fitted with an adjustable 6-position Magpul SL stock.
• Feeds from two included 10-round Magpul magazines.
• Ships with a Rose combo lock, Rose Savior bag, and three dummy rounds.
• Weighs approximately 14.1 pounds shipping weight.

Frequently Asked Questions

What is the ROSE program? A Sig Sauer initiative designed with and for female shooters, offering platform training and gear tailored to their needs.

Does this rifle include an optic? Yes, a ROSE-stylized Romeo5 GEN II red dot ships installed.

What’s included with this rifle? A Rose combo lock, Rose Savior bag, three 5.56 dummy rounds, and two 10-round Magpul magazines.

Buy the Sig Sauer M400 ROSE 5.56 NATO

An easy-operating, low-recoil AR platform built specifically for the female shooter is exactly what the M400 ROSE delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.