SIG Sauer M400-Forge Black 5.56 NATO 30-Round Semi-Auto Rifle

The SIG Sauer® M400-Forge is a modern 5.56 NATO rifle engineered for shooters who demand reliability, precision, and performance. Built around a 16" cold hammer forged barrel and mid-length gas system, the M400-Forge delivers exceptional durability and smooth, consistent operation in any environment. At the heart of the rifle is a TriggerTech 3.5 lb two-stage flat blade duty trigger, delivering the kind of crisp, predictable break shooters typically upgrade to. Paired with the included ROMEO-MSR Gen II red dot optic, the M400-Forge provides fast target acquisition and confident shooting right out of the box. A full-length free-floating M-LOK handguard, ambidextrous charging handle, and Magpul SL-K adjustable stock deliver modern ergonomics and adaptability for a wide range of applications. Built by SIG Sauer, a brand trusted worldwide for performance and durability, the M400-Forge is backed by the SIG Infinite Guarantee - their lifetime, fully transferable promise that stands behind every firearm they build. The result is a rifle ready for the range, defense, and the mission ahead.

• TriggerTech 3.5 pound two-stage flat blade duty trigger
• 16" cold hammer forged barrel with mid-length gas system
• ROMEO-MSR Gen II 2 MOA red dot included
• Full-length free-floating M-LOK handguard
• Ambidextrous charging handle
• Magpul SL-K 6-Position adjustable stock
• Caliber: 5.56 NATO
• Barrel length: 16"
• Barrel material: Cold Hammer Forged Steel
• Twist rate: 1:7
• Threads: 1/2"-28, 90° Shouldered
• Muzzle device: A2 Birdcage flash hider
• Operating System: Mid-length Direct Impingement
• Stock type: 6-position Magpul SL-K
• Grip type: Reduced angle
• Trigger type: TriggerTech 3.5-pound 2-stage flat blade
• Trigger shape: Flat
• Manual safety: Ambidextrous
• Forend type: M-LOK Black Anodized Alloy
• Accessory rail: M-LOK/Full-Length Picatinny
• Mag type: AR-15
• Receiver Finish: Black Anodized
• Color: Black
• Overall length: 35.5"
• Weight: 6.8 lbs.