Product Overview
The SIGM400 5.56 NATO RIFLE is a 16-inch semi-automatic AR-platform configuration featuring a Romeo-MSR Gen II optic, a telescoping stock, an aluminum M-LOK handguard, and an FDE finish. The package includes one 30-round magazine.
Key Features
- Caliber: 5.56 NATO
- Action: Semi-automatic
- Barrel length: 16 in
- Handguard: Aluminum M-LOK HG
- Stock: Telescoping (tele stock)
- Optic: Romeo-MSR Gen II
- Finish: FDE
- Included magazine: (1) 30RD MAG
Specifications
- Model: SIGM400
- Firearm type: Rifle
- Cartridge: 5.56 NATO
- Operating mode: Semi (semi-automatic)
- Barrel length: 16 in
- Handguard system: AL M-LOK
- Optics system: ROMEO-MSR GEN II
- Stock configuration: Tele stock
- Color/finish: FDE
- Magazine capacity: 30 rounds
Benefits
- Integrated optic platform: Romeo-MSR Gen II supports rapid target acquisition with a red-dot style sighting system.
- M-LOK handguard: Aluminum M-LOK HG provides accessory mounting interfaces for configurable setups.
- Telescoping stock: Adjustable length of pull supports consistent cheek weld and sight alignment across varying positions.
- 16-inch configuration: Balances compact handling with a standard rifle-length sighting geometry.
Use Cases
- Range sessions requiring a ready-to-mount optic configuration
- Training drills benefiting from adjustable stock geometry
- Configurations using M-LOK accessory mounting on a 16-inch rifle build
Why Choose This SIGM400 Build
This SIGM400 configuration pairs a 16-inch 5.56 NATO semi-automatic rifle with a Romeo-MSR Gen II optic, an aluminum M-LOK handguard, and a telescoping stock, delivered with a 30-round magazine and finished in FDE.
