SIG SAUER M400 ROSE 5.56 NATO Semi-Auto AR-15, 16 in Threaded Barrel, ROMEO5X Red Dot, Ambidextrous Controls
This SIG SAUER M400 ROSE stands out with factory ROSE engravings and rose-gold accented ambidextrous controls, paired with a SIG SAUER ROMEO5X red dot installed on the receiver rail. It features a 16 in chrome-moly barrel with 1/2x28 threads and a 1:7 twist, a mid-length gas system, and a free-floating 10 in M-LOK handguard. The package is tied to the ROSE program collaboration with Lena Miculek and includes useful accessories for immediate range use.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are some superficial scratches and blemishes present.
What’s Included
- ROSE by SIG SAUER soft rifle case
- SIG SAUER ROMEO5X red dot sight (installed)
- Two 30-round Magpul PMAG Gen M2 AR-15 magazines
- Owner's manual
- Snap caps
- Original factory box
- Rifle sling
The ROSE series treatment gives this M400 a distinct look and identity. ROSE script is engraved on the 10 in free-floating M-LOK alloy handguard, and the SIG SAUER grip carries an embossed rose motif. Controls receive rose-gold accents while the rifle retains a durable black anodized finish throughout the receivers.
The 16 in chrome-moly steel barrel uses a tapered-shoulder, 1/2x28 threaded muzzle and a 1:7 twist to stabilize common 5.56mm NATO projectiles. A mid-length gas system balances impulse, and the free-float handguard provides M-LOK attachment surfaces while preserving barrel harmonics.
Ambidextrous features include the safety selector, magazine release, and an enlarged dual-latch charging handle for easy manipulation from either side. The Matchlite Duo flat two-stage trigger offers a clean, predictable break. A Magpul MOE-SL stock adjusts through six positions and locks up solidly.
The included SIG SAUER ROMEO5X red dot is mounted to the receiver rail and uses a red dot reticle for fast sighting. Copper-colored end caps complement the ROSE accents, and the optic is ready to zero with your preferred load.