Sig Sauer M400 SDI XSeries Features
The M400 SDI XSeries is designed with an aluminum M-LOK handguard, allowing for modular accessory attachment while maintaining a lightweight feel. The Sig 2-Stage Matchlite Duo trigger ensures a crisp, consistent pull, improving precision for both competitive and defensive applications.
This rifle features an ambidextrous safety, enhancing usability for both right- and left-handed shooters. The threaded barrel (1/2×28) accommodates suppressors and other muzzle devices, while the Sig Flash Hider Compensator reduces recoil and muzzle rise. The rifle is optics-ready, featuring a flat-top upper receiver, allowing shooters to customize their sighting system to their preference.
Sig Sauer M400 SDI XSeries Specifications
- Caliber: .223 Rem | 5.56 NATO
- Action: Semi-Auto
- Barrel Length: 16″
- Overall Length: 36.5″
- Twist Rate: 1-in-7″
- Capacity: 30+1 Rounds
- Magazine: 1 x 30-Round Polymer Mag
- Finish: Flat Dark Earth
- Stock: Collapsible / Folding (Magpul SL)
- Sights: None (Optics Ready)
- Muzzle Device: Sig Flash Hider Compensator
- Thread Pattern: 1/2×28
- Safety: Ambidextrous
- Handguard: Aluminum M-LOK
- Trigger: Sig 2-Stage Matchlite Duo
- Weight: 7 lbs.
