Sig Sauer M400 SDI XSeries 5.56 NATO 16" FDE 30+1 RM400-SDI-16B-FDE

Sig Sauer M400 SDI XSeries

The Sig Sauer M400 SDI XSeries is a semi-automatic 5.56 NATO and .223 Remington rifle built for reliable, accurate shooting in a modern layout. A 16 inch barrel with a 1 in 7 twist sits under a Flat Dark Earth finish and an aluminum M-LOK handguard. A Magpul SL stock and 30+1 capacity give the rifle a familiar AR style footprint that is easy to set up for the range or duty use.

The Sig 2-Stage Matchlite Duo trigger is made for a crisp, consistent pull. An ambidextrous safety works for right and left handed shooters, and the flat top upper is optics ready so you can mount the glass you want. The muzzle is threaded 1/2x28 and capped with a Sig flash hider compensator to help with recoil and muzzle rise. One 30 round polymer magazine ships with the rifle.

This M400 SDI XSeries is well suited to training, competition, and defensive use where 5.56 NATO is the working cartridge. At 7 pounds and 36.5 inches overall, the aluminum handguard keeps accessory weight in check while leaving room for a light or grip. Shooters who want a new FDE Sig with a match style two stage trigger and M-LOK modularity will find this rifle ready to run.

Specifications