The Sig Sauer M400 Rose in 5.56 NATO (MPN RM400-16B-ROSE-R5X2) pairs a 16-inch barrel rifled at a 1:7-inch twist with a factory-mounted Romeo5 Gen II red dot optic, giving shooters an optic-ready rifle out of the box. Sig Sauer finishes the barrel in black and threads the muzzle at 1/2×28, while ambidextrous controls and a black finish round out the package. The rifle ships with two 30-round Magpul magazines and weighs about 14.1 pounds shipping. Among AR-pattern rifles in the AR rifles category, the M400 Rose favors shooters who want a ready-to-run optic-equipped 5.56 rifle with spare magazines included.

Key Specifications

• Chambered in .223 Rem/5.56 NATO with a 1:7-inch rate of twist.
• Features a 16-inch barrel threaded 1/2×28.
• Ships with a factory-mounted Romeo5 Gen II red dot optic.
• Includes two 30-round Magpul magazines.
• Feeds from a detachable magazine with a 30-round capacity.
• Controls are ambidextrous for the safety selector.
• Barrel is finished in black.
• Overall length is approximately 36.5 inches.
• Ships at approximately 14.1 pounds.

Frequently Asked Questions

Does this rifle include an optic? Yes, a factory-mounted Romeo5 Gen II red dot sight.

How many magazines are included? Two 30-round Magpul magazines ship with the rifle.

Is the muzzle threaded? Yes, at 1/2×28, ready for a brake or suppressor.

Buy the Sig Sauer M400 Rose 5.56 NATO Rifle

A ready-to-run, optic-equipped 5.56 rifle with spare magazines included is exactly what the M400 Rose delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.