SIG SAUER M400 ROSE Semi-Auto Rifle – 5.56 NATO, 16″ Barrel, Magpul SL Stock, ROMEO5 Gen II, 30-Round
The SIG SAUER M400 ROSE is a premium semi-automatic rifle chambered in 5.56 NATO, combining the proven performance of the M400 platform with the distinctive styling and educational focus of the ROSE series. Built for shooters seeking a refined, easy-to-use AR-style rifle, it features a 16-inch chrome-moly steel barrel, a mid-length direct impingement gas system, and a factory-installed SIG SAUER ROMEO5 Gen II red dot sight for rapid target acquisition and dependable accuracy. (Sig Sauer)
The rifle is equipped with a lightweight 10-inch free-floating M-LOK® handguard with exclusive ROSE engraving, a Magpul SL adjustable stock, and rose gold-colored controls that complement the ROSE-themed design. A SIG Matchlite Duo 2-stage trigger delivers a crisp, consistent trigger pull, while fully ambidextrous controls enhance handling for both right- and left-handed shooters. The SIG ROSE flash hider-compensator helps reduce muzzle rise for improved control during follow-up shots. (Sig Sauer)
Designed around the reliable AR-15 platform, the M400 ROSE accepts standard AR-pattern magazines and includes a 30-round magazine where permitted by law. Whether used for recreational shooting, training, or other lawful sporting applications, the M400 ROSE delivers premium features, exceptional reliability, and modern ergonomics in a distinctive package. (Sig Sauer)
Specifications
| Feature | Specification |
|---|---|
| Manufacturer | SIG SAUER |
| Model | M400 ROSE |
| Manufacturer Part Number | RM40016BROSER5X2 |
| Caliber | 5.56 NATO |
| Action | Semi-Automatic |
| Operating System | Mid-Length Direct Impingement |
| Barrel Length | 16 inches |
| Barrel Material | Chrome-Moly Steel |
| Twist Rate | 1:7″ |
| Capacity | 30+1 Rounds |
| Magazine | 2 × 30-Round Magazines |
| Optic | SIG SAUER ROMEO5 Gen II Red Dot |
| Trigger | SIG Matchlite Duo 2-Stage Trigger |
| Stock | Magpul SL Adjustable Stock |
| Handguard | 10″ Free-Floating M-LOK® with ROSE Engraving |
| Grip | ROSE Engraved AR-Style Grip |
| Controls | Fully Ambidextrous with Rose Gold Accents |
| Muzzle Device | SIG ROSE Flash Hider-Compensator |
| Receiver Finish | Hard Coat Anodized |
| Optics Mount | Full-Length Picatinny Rail |
| Overall Length | Approximately 35.5–38.5 inches (stock adjustable) |
| Weight | Approximately 7 lbs |
Key Features
- Chambered in 5.56 NATO
- 16-inch chrome-moly steel barrel with 1:7 twist
- Mid-length direct impingement gas system
- Factory-installed SIG SAUER ROMEO5 Gen II red dot optic
- SIG Matchlite Duo 2-stage trigger
- Magpul SL adjustable stock
- 10-inch free-floating M-LOK® handguard with ROSE engraving
- Fully ambidextrous controls
- Distinctive rose gold-colored controls and ROSE styling
- SIG ROSE flash hider-compensator
- Includes two 30-round magazines (where legally permitted) (Sig Sauer)



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