Sig Sauer RM400-SDI-16B-R5FX M400 SDI XSeries 5.56 NATO 16" 1:7" Bbl Black Rifle w/ Romeo5 Gen II Red Dot Sight, Foxtrot Rail Mtd Light & (1) 30rd Mag

The Sig Sauer M400 SDI XSeries RM400-SDI-16B-R5FX is a 5.56 NATO rifle with a 16-inch barrel and a 1:7 twist rate, making it well-suited for stabilizing heavier bullets. Finished in black, this rifle comes as a complete package that includes a Romeo5 Gen II red dot sight for fast target acquisition, and a Foxtrot rail-mounted tactical light for low-light use. It features a free-floating M-LOK handguard, enhancing accuracy and allowing for accessory customization. The Sig Sauer RM400-SDI-16B-R5FX rifle also includes Sig's XSeries ergonomic upgrades for better handling and control, and it ships with one 30-round magazine. The full-length Picatinny rail on top provides additional flexibility for optics and attachments.

Features Include:

• ROMEO5 GENII Red Dot, FOXTROT-MSR Full Size Light and Vertical Foregrip


• Fully Ambidextrous Controls


• Free-Floating M-LOK Forend


• (3) M-LOK Rail Covers Included (3) M-LOK Rail Covers Included


• SIG 2-Stage Matchlite Duo Trigger


• 16” Chrome/Moly Steel Barrel with 1:7 Twist Rate


• 6-Position Magpul MOE-SL Stock


• Low Profile Gas Block with Mid-Length Operating System