The Sig Sauer M400 Forge With Romeo-MSR Gen II is a modern 5.56 NATO rifle built around a 16" cold hammer forged, threaded barrel and a mid-length gas system for smooth, predictable recoil. Its flat dark earth Cerakote receiver and 15" free-floating M-LOK handguard provide a rigid, lightweight platform, while the TriggerTech 3.5 lb two-stage flat blade duty trigger offers a clean, repeatable break for precise shooting. An ambidextrous charging handle and Magpul SL-K six-position stock support comfortable control for a wide range of shooters.

This configuration ships ready to shoot with a factory-mounted Romeo-MSR Gen II 2 MOA red dot, giving fast sight acquisition for range work, training, or defensive use. The reduced-angle grip, AR-15 pattern 30-round magazine compatibility, and adjustable length of pull make it easy to tailor the rifle to different users and roles. Sig Sauer’s attention to detail in the M400 Forge reflects the company’s reputation for dependable performance and thoughtful engineering.

Key Features:

• Manufacturer: Sig Sauer
• Model: M400 Forge With Romeo-MSR Gen II
• Caliber: 5.56 NATO / .223 Rem
• Condition: New
• Action: Semi-Automatic
• Barrel Length: 16"
• Number of Magazines: 1
• Capacity: 30 Rounds
• Optic Footprint: Romeo-MSR Gen II 2 MOA Red Dot
• Unique Features: TriggerTech 3.5 Lb Two-Stage Flat Blade Trigger, 15" Free-Float M-LOK Handguard, Ambidextrous Charging Handle, Magpul SL-K Adjustable Stock
• Night Sights: No
• External Safety: Ambidextrous Manual Safety
• Threaded Barrel: Yes
• What's In The Box: Rifle, Romeo-MSR Gen II Red Dot, One 30-Round Magazine
• Weight: 6.8 Lb
• Length: 32.25"–35.5"
• Width: 2.7"