ASK AN EXPERTDescription
- Free Floating M-LOK Enhanced Handguard with lightening cuts to reduce weight
- 3 chamber compensator
- Ambidextrous charging handle made of aircraft grade aluminum and a dual roll pin design
- ROMEO5 optic featuring a 2MOA dot with ten illumination settings, MOTAC, and 50k battery life
- Flip-up front and rear iron sights that are easy to install, adjustable, and deploy quickly
- M-LOK front sight adapter with co-witness height made of lightweight aluminum
- Multiple configurations of M-LOK grip kits made of high strength polymer
- Factory upgraded flat blade, single stage trigger
- SIG Matchlite Trigger
The Sig Sauer M400 Tread Coil Rifle sets a new standard in performance and value in the AR category. With installed accessories including ROMEO5 Red Dot Sight, 2 Stage Match Trigger, and 13" lightweight handguard, the Coil is the perfect rifle package for the avid user or first-time buyer. Other features of the Tread Coil include the precision 16" stainless barrel, ambidextrous controls, and 6-position Magpul SL Stock.
Warranty Information
| Caliber | 5.56 NATO |
| Barrel Length, in | 16" |
| Mags Included | 30rd Polymer Mag |
| Mag Type | AR-15 |
| Action Type | Semi-Auto |
| Stock Type | MAGPUL SL-K Telescoping Stock |
| Barrel Material | Stainless Steel |
| Trigger Type | SIG Matchlite |
| Twist Rate | 1:8 |
| Forend Type | Alloy |
| Grip | Polymer |
| Receiver Finish | Hard Coat Anodized |
| Threads | 1/2 in - 28 tpi |
| Accessory Rail | M-LOK |
| Operating System | Direct Impingement |
| Overall Length, in | 30.8" |
| Overall Width, in | 2.5" |
| Height, in | 7.5" |
| Weight, lbs | 7 |
