Sig Sauer M400 Forge 5.56 Rifle with 16.5-inch Cold Hammer Forged Barrel and Romeo MSR Gen2 - Matte Concrete Gray Cerakote Finish

Overview

The SIGM400 SIG Sauer SIGM400 5.56 NATO rifle is configured with a 16 in barrel, Forge Elite Concrete finish, semi-automatic action, and a ROMEO-MSR Gen II optic. The platform includes a telescoping stock, AL M-LOK handguard, and includes one 30-round magazine.

Key Features

• Model: SIGM400
• Caliber: 5.56 NATO
• Barrel length: 16 in
• Action: Semi (semi-automatic)
• Handguard: AL M-LOK HG
• Stock: Tele stock (telescoping)
• Optic: ROMEO-MSR Gen II
• Magazine included: (1) 30RD mag
• Finish: Forge Elite Concrete

Specifications

• Product type: Rifle
• Chambering: 5.56 NATO
• Barrel length: 16 in
• Operating mode: Semi-automatic
• Mounting/optic system: ROMEO-MSR Gen II
• Handguard interface: M-LOK
• Included magazine capacity: 30 rounds

Benefits

With a 16 in configuration, M-LOK handguard interface, telescoping stock, and an integrated ROMEO-MSR Gen II optic, the SIGM400 is built for a streamlined setup that supports consistent aiming and straightforward accessory mounting. The Forge Elite Concrete finish provides a distinctive look across the rifle’s external surfaces.

Use Cases

• Range sessions requiring a 5.56 NATO semi-automatic rifle with a 16 in barrel
• Optics-forward setups using the ROMEO-MSR Gen II
• Configurations that benefit from an M-LOK handguard for accessory attachment
• Training and practice involving a 30-round magazine

The Sig Sauer M400 Forge is a high-performance semi-automatic rifle designed for precision and reliability in various shooting scenarios. Featuring a 16.5-inch cold hammer forged steel barrel, it offers enhanced durability and accuracy, ideal for both tactical and sporting use. The rifle's overall length adjusts between approximately 32.25 inches and 35.50 inches, providing versatile handling for different shooting positions. Its lightweight alloy receiver is finished with a matte Concrete Gray Cerakote coating, offering corrosion resistance and a sleek appearance. Equipped with a Picatinny rail on the receiver, the M400 Forge allows for easy mounting of optics and accessories, making it a highly customizable platform. The rifle comes with a polymer Magpul SL-K stock in black, designed to provide a comfortable, stable grip, and features M-Lok handguards for convenient attachment of accessories. The 5.56mm caliber with a 1:7 twist rate ensures optimal stabilization for a variety of standard and match-grade ammunition. The rifle's trigger is a TriggerTech two-stage, providing a crisp, predictable pull, and it has a detachable 30-round magazine for extended shooting sessions. The rifle is optics-ready, enabling quick and secure attachment of sights or scopes. Weighing approximately 6.8 pounds, the M400 Forge is well-balanced for maneuverability and control. Whether for home defense, target shooting, or tactical applications, this rifle combines Sig Sauer's engineering excellence with features that meet the demands of serious shooters. Its robust construction, precision components, and modern finish make it a reliable choice for firearm enthusiasts and professionals alike.

Features:

• 16.5-inch cold hammer forged steel barrel for durability and accuracy

• Matte Concrete Gray Cerakote finish on receiver and metal components for corrosion resistance

• Optics-ready Picatinny rail on the receiver for easy mounting of sights and accessories

• M-Lok handguards for versatile accessory attachment

• Polymer Magpul SL-K stock in black for ergonomic comfort and stability

• TriggerTech two-stage trigger for precise shot control

• Detachable 30-round magazine for extended shooting capacity

• Overall length adjustable from approximately 32.25 to 35.50 inches

• Lightweight alloy receiver with a sleek finish for maneuverability

• Standard 1:7 twist rate barrel optimized for 5.56mm ammunition

Compliance Notice

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