Sig Sauer M400 Rose w/Romeo Gen III Rifle 5.56mm 30rd Magazine 16″ Threaded Barrel 6 Position Stock
$1,399.99
The Sig Sauer M400 Rose is a semi-automatic rifle chambered in 5.56 NATO, featuring a 16-inch threaded barrel and a SIG Flash Hider-Compensator for enhanced performance. Equipped with a ROMEO5 Gen II sight and a 6-position Magpul MOE-SL stock, this rifle is ideal for tactical applications and dynamic shooting environments.
18 in stock
Features:
- CALIBER: 5.56 NATO
- SIGHTS: ROMEO5 GENII Installed
- BARREL LENGTH: 16 in [406.4 mm]
- BARREL MATERIAL: Chrome / Moly Steel
- TWIST RATE: 1:07
- THREADS: 1/2 in – 28 tpi tapered shoulder
- MUZZLE DEVICE: SIG Flash Hider-Compensator
- ACTION TYPE: Semi-Auto
- OPERATING SYSTEM: Mid-Length Direct Impingement
- STOCK TYPE: 6-Position Magpul MOE-SL Black
- GRIP TYPE: Reduced Angle
- TRIGGER TYPE: SIG 2-Stage Matchlite Duo
- TRIGGER SHAPE: Flat
- MANUAL SAFETY: Ambidextrous
- FORENDTYPE: Free-Floating M-LOK Alloy
- ACCESSORY RAIL: M-LOK
- MAG TYPE: AR-15
- MAGS INCLUDED: (2) 30rd Polymer Mag
- RECEIVERFINISH: Black Anodized
- OVERALL LENGTH: 36.5 in
- COLLAPSED LENGTH: 33.25 in
- FOLDED LENGTH: N/A
- OVERALL WIDTH: 2.75 in
- HEIGHT: 7.1 in
- WEIGHT: 7 lbs
- ADJUSTABLE GAS SYSTEM: N/A
| Weight | 14.100 lbs |
|---|---|
| Dimensions | 43.750 × 14.500 × 3.750 in |
| Manufacturer | Sig Sauer |
| Barrel Length | 16.0 |
| Capacity | 30+1 |
| Action | Semi-Auto |
| Finish | Black |
| Frame Material | Aluminum |
| Caliber | 5.56 NATO |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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