ASK AN EXPERTDescription
- 16" stainless steel barrel
- M-LOK handguard with lightening cuts to reduce weight, available in 13" and 15" lengths
- 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
The Sig Sauer SIGM400 Tread 5.56 NATO 16in Semi-Auto Rifle is an optics ready, aluminum frame rifle. Tread features a 16" stainless steel barrel with a free-floating M-LOK handguard, a single-stage polished/hard-coat trigger, ambidextrous controls, a Magpul SL-K 6 position telescoping stock, a mid-length gas system, and is available in 5.56 NATO.
All the features, all the freedom - none of the compromises.
Warranty Information
| Caliber | 5.56x45mm NATO |
| Capacity | 10 rds |
| Mags Included | (1) 10rd Polymer Mag |
| Mag Type | AR-15 |
| State Compliant | CA |
| Action | Semi-Automatic |
| Operating System | Direct Impingement |
| Trigger | SIG Enhanced |
| Stock Type | Fixed |
| Barrel Material | Stainless Steel |
| Twist Rate | 1:8 |
| Forend Material | Alloy |
| Grip Material | Polymer |
| Receiver Finish | Hard Coat Anodized |
| Accessory Rail | M-LOK |
| Barrel Length, in | 16" |
| Overall Length, in | 30.8" |
| Overall Width, in | 2.5" |
| Height, in | 7.5" |
| Weight, lb | 7 |
