- MANUFACTURER: SIG SAUER
- FAMILY: SIGM400 Series
- MODEL: M400 Tread Coil
- TYPE: Rifle
- ACTION: Semi-Auto
- CALIBER/GAUGE: 223 Rem | 5.56 NATO
- FINISH: Black
- FINISH TYPE: Black
- STOCK/GRIPS: Magpul SL-K Telescoping Stock
- BARREL: 16"
- RATE-OF-TWIST: 1-in-8"
- CAPACITY: 30
- # OF MAGAZINES: 1
- MAG DESCRIPTION: 30 rd.
- SIGHTS: ROMEO5 Tread Red Dot
- SIGHT TYPE: Adjustable Sights
- THREAD PATTERN: 1/2x28
- SPECIAL: Threaded Barrel Model
- WEIGHT: 7 lbs.
- SHIPPING WEIGHT: 9.9 lbs.
- ADDL INFO: Free-Floating M-LOK Handguard
- ADDL INFO: Sig Matchlite Trigger
- ADDL INFO: Ambidextrous Controls
- MFG MODEL NO: RM400-16B-TRD-COIL
- UPC: 798681632381
- FFL: Yes
- Caliber: 5.56x45