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.