SIG Sauer M400 Tread 5.56 NATO Semi-Auto Rifle 16" Barrel 30rd

The SIG Sauer M400 Tread V2 delivers proven AR-15 platform reliability with enhanced features for competitive shooting, tactical training, and home defense applications. This semi-automatic rifle combines mil-spec components with SIG's precision manufacturing standards to create a versatile platform that performs consistently across diverse shooting scenarios.

What Makes This Different

The M400 Tread V2 incorporates SIG's enhanced bolt carrier group with improved coatings for extended service life and reduced maintenance intervals. The rifle features a free-floating M-LOK handguard that maintains barrel harmonics while providing multiple attachment points for accessories. SIG's proprietary trigger system delivers a crisp break with minimal overtravel, offering superior control compared to standard mil-spec triggers.

Key Features

• 16-inch chrome-lined barrel with 1:7 twist rate optimized for 5.56 NATO ammunition
• Free-floating 13-inch M-LOK handguard with anti-rotation tabs
• Enhanced bolt carrier group with nickel boron coating
• SIG Sauer single-stage trigger with 6-pound pull weight
• 6-position telescoping stock with QD sling attachment points
• A2-style flash hider with standard 1/2x28 threading
• Includes one 30-round Magpul PMAG magazine

Field testing demonstrates consistent sub-2 MOA accuracy with quality ammunition, while the chrome-lined barrel maintains precision through extended firing sessions. The rifle functions reliably in temperature ranges from -40°F to 140°F and continues operating after exposure to sand, dust, and moisture. Competition shooters appreciate the balanced weight distribution and minimal muzzle rise during rapid-fire sequences.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 16 inches, chrome-lined
• Overall Length: 32.75-36.75 inches (stock extended)
• Weight: 6.85 pounds (unloaded)
• Twist Rate: 1:7 inches
• Gas System: Mid-length with adjustable gas block
• Handguard: 13-inch free-floating M-LOK
• Magazine Capacity: 30 rounds (Magpul PMAG included)
• Finish: Hard coat anodized aluminum, matte black
• Manufactured: United States

The M400 Tread V2 represents SIG Sauer's commitment to manufacturing AR-15 platforms that exceed mil-spec standards while remaining competitively priced. Current production models ship with updated components and SIG's comprehensive warranty coverage.