Product Overview
The M400-SDI X has been developed with the input from the professional instructors at SIG SAUER Academy. Building upon their decades of experience and countless hours of instruction, we have developed the M400-SDI X to meet the highest standards of performance and reliability. With fully ambidextrous controls including a bolt catch/and release unique to the M400-SDI lower-receiver, the M400-SDI X delivers advanced performance for both left & right-handed shooters and makes transitional shooting easier than ever. The free-floating handguard utilizes a new steel lockup design that significantly reduces handguard deflection by providing maximum rigidity and allows for accessories to be attached on all four sides with no effect on accuracy. The 2-Stage Matchlite Duo trigger provides an out-of-the-box crisp 4.5 - 6.5lb pull weight with a flat blade design for a precision feel. The M400-SDI X utilizes the highest quality performance coatings to ensure maximum durability and reliability.
Specifications
- Make: Sig Sauer
- Model: M400-SDI X
- SKU: RM400-SDI-16B-P
- Firearm Type: Rifle
- Caliber: 5.56 NATO
- Sights: Optics Ready
- Barrel Length: 16 in [406.4 mm]
- Barrel Material: Chrome / Moly Steel
- Twist Rate: 1:7
- Threads: 1/2"-28 TPI Tapered Shoulder
- Muzzle Device: SIG Flash Hider–Compensator
- Action Type: Semi-Auto
- Operating System: Mid-Length Direct Impingement
- Stock Type: 6-Position Black Magpul SL
- Grip Type: Reduced Angle
- Trigger Type: SIG 2-Stage Matchlite Duo
- Trigger Shape: Flat
- Manual Safety: Ambidextrous
- Forend Type: M-LOK Black Anodized Alloy
- Accessory Rail: M-LOK / Picatinny
- Magazine Type: AR-15
- Magazines Included: (1) 30-round Polymer Magazine
- Color: Black
- Receiver Finish: Hard Coat Anodized
- Overall Length: 36.5 in [927 mm]
- Collapsed Length: 33.3 in
- Folded Length: N/A
- Overall Width: 2.8 in [71 mm]
- Height: 7.1 in
- Weight: 7.0 lb [3.2 kg]
- Forward Assist: Yes
