Sig Sauer M400 Forge 5.56 Rifle with 16.5-inch Barrel, Moss Green Cerakote Finish, Romeo MSR Gen2, and Magpul SL-K Stock

Product Overview

The SIGM400 5.56 NATO Rifle combines a 16-inch barrel platform with a modern optic configuration and an ergonomic tele stock. Finished in Moss Green, the rifle is built for semi-automatic operation and includes an AL M-LOK handguard and a 30-round magazine.

Key Features

• Caliber: 5.56 NATO
• Action: Semi-automatic
• Barrel Length: 16 in
• Finish/Color: Moss Green
• Handguard: AL M-LOK HG
• Optics: ROMEO-MSR GEN II
• Stock: TELE STOCK
• Included Magazine: (1) 30RD MAG
• Model: SIGM400

Specifications

• Product Type: Rifle
• Firearm Configuration: Semi
• Barrel Configuration: 16IN
• Handguard System: AL M-LOK HG
• Optic Model: ROMEO-MSR GEN II
• Stock Model: TELE STOCK
• Magazine Capacity: 30 rounds

Benefits

The 16-inch 5.56 NATO configuration supports consistent performance while the ROMEO-MSR GEN II optic provides a focused aiming interface. The AL M-LOK HG enables modular mounting for accessories, and the TELE STOCK supports rapid adjustment for comfortable, repeatable positioning.

Use Cases

• Precision-focused target shooting
• Range sessions requiring a ready-to-mount optic
• Training drills using a semi-automatic 5.56 NATO rifle
• Accessory-equipped setups leveraging M-LOK mounting

Why Choose This Model

The SIGM400 package delivers a complete, configured rifle with a 16-inch barrel, ROMEO-MSR GEN II optic, TELE STOCK, AL M-LOK handguard, and a 30-round magazine in a Moss Green finish.

The Sig Sauer M400 Forge is a high-performance semi-automatic rifle designed for versatility and reliability in various shooting scenarios. Featuring a 16.5-inch Cold Hammer Forged Steel barrel with a 1:7-inch twist rate, this rifle ensures precision and durability. The Moss Green Cerakote finish provides corrosion resistance and a sleek matte appearance, making it suitable for tactical applications and outdoor use. The alloy receiver is equipped with a Picatinny rail for easy mounting of optics and accessories, enhancing customization options for shooters of all skill levels. The rifle's weight of approximately 6.8 pounds and overall length adjustable from 32.25 to 35.50 inches make it comfortable to handle while maintaining stability during firing. The M-Lok handguards offer modular attachment points for lights, grips, or other accessories, and the right-handed polymer grip ensures a secure hold during operation. The rifle comes with a 30-round detachable magazine, allowing for extended shooting sessions without frequent reloads. The TriggerTech Two-Stage trigger provides a clean, crisp pull, optimizing accuracy and control. Designed for use with optics, the rifle is optics-ready and compatible with various sighting systems. The Magpul SL-K stock in black polymer adds to the ergonomic fit, offering comfort and stability. Whether for tactical training, competitive shooting, or recreational use, the Sig Sauer M400 Forge combines robust construction, thoughtful features, and a sleek finish to meet demanding shooting needs.

Features:

• 16.5-inch Cold Hammer Forged Steel barrel with 1:7-inch twist rate for precision and durability

• Moss Green Cerakote finish on the receiver and metal components for corrosion resistance

• Optics-ready receiver with Picatinny rail for easy mounting of scopes and accessories

• M-Lok handguards for modular attachment options

• Polymer grip and Magpul SL-K stock for ergonomic handling and comfort

• 30-round detachable magazine for extended shooting sessions

• TriggerTech Two-Stage trigger for improved accuracy and control

• Overall adjustable length from 32.25 to 35.50 inches for customizable fit

• Right-handed design with lightweight alloy construction

• Includes Romeo MSR Gen2 for enhanced aiming capabilities

Compliance Notice

This product is intended for lawful use only. Restrictions may apply based on state or local laws.