The Sig Sauer M400 Forge 5.56 NATO 16" Black with Romeo-MSR Gen II CA Compliant rifle delivers a complete, optic-equipped AR-15 package right out of the box. A 16" cold hammer forged barrel with a mid-length gas system works with the included muzzle brake to keep recoil smooth and manageable, while the 15" free-float M-LOK handguard and ambidextrous charging handle support confident handling and accessory mounting. A TriggerTech 3.5 lb two-stage flat blade duty trigger provides a clean, predictable break for precise shot placement, and the ROMEO-MSR Gen II 2 MOA red dot offers fast, clear target acquisition.

This California-compliant configuration pairs a 10-round detachable magazine with a Magpul MOE fixed stock and compliant grip setup, making it suitable for range use, training, and general sporting applications where reliability and consistency matter. The lightweight alloy receiver and balanced layout help reduce fatigue over longer sessions, while the red dot and refined trigger make it easy to grow skills and tighten groups. Built on the proven M400 platform, this rifle reflects Sig Sauer’s focus on dependable performance and thoughtful engineering.

Key Features:

• Manufacturer: Sig Sauer
• Model: M400 Forge CA Compliant
• Caliber: 5.56 NATO
• Action: Semi-Automatic
• Barrel Length: 16 in
• Capacity: 10 Rounds
• Number of Magazines: 1
• Optic Footprint: Romeo-MSR Gen II 2 MOA Red Dot
• Unique Features: TriggerTech 3.5 lb Two-Stage Flat Blade Trigger, 15 in Free-Float M-LOK Handguard, Ambidextrous Charging Handle, Muzzle Brake, Magpul MOE Fixed Stock
• Threaded Barrel: Yes
• Weight: 7.2 lb
• Length: 34.4 in
• Width: 2.7 in
• Height: 7.2 in