# SIG Sauer M 400 - Guns For Sale

The SIG Sauer M400 is an AR-15-style rifle chambered in 5.56 NATO (.223 Remington compatible). Its 16-inch stainless steel barrel has a 1:7 twist rate, and the free-floating M-LOK handguard supports optics, lights, and grips without affecting barrel harmonics. The lightweight aluminum receiver balances durability and weight. Ambidextrous controls, safety selector and magazine release, accommodate left- and right-handed shooters. The polished trigger provides a consistent pull, and the 6-position collapsible stock adjusts for fit. A top Picatinny rail runs the length of the upper for optics mounting.

## Featured Firearms (10 total)

| Product | Caliber | Price |
|---------|---------|-------|
| [SIG Sauer M400 SDI Tactical Pistol 5.56 NATO, 11.5" Barrel, 30rd](https://gunsnation.com/p/sig-sauer-m400-sdi-tactical-pistol-5-56-nato-11-5-barrel-30rd/UCE3nP0wZ) | 5.56 NATO | - |
| [SIG Sauer M400 DH3 3-GUN: Precision .223 Wylde Rifle, Grey Edition](https://gunsnation.com/p/sig-sauer-m400-dh3-3-gun-precision-223-wylde-rifle-grey-edition/UCE3nOlTj) | .223 Wylde | - |
| [Sig Sauer M400 Tread Distressed OD Green 5.56 NATO Rifle](https://gunsnation.com/p/sig-sauer-m400-tread-distressed-od-green-5-56-nato-rifle/UCE3nOsEa) | 5.56 NATO | - |
| [Sig Sauer M400 Tread Predator Jungle Green 5.56 NATO Rifle](https://gunsnation.com/p/sig-sauer-m400-tread-predator-jungle-green-5-56-nato-rifle/UCE3nOu6X) | 5.56 NATO | - |
| [Sig Sauer M400 Tread V2 5.56 NATO Rifle - Moss Green Precision Shooter](https://gunsnation.com/p/sig-sauer-m400-tread-v2-5-56-nato-rifle-moss-green-precision-shooter/UCE3nOy5s) | 5.56 NATO | - |
| [Sig Sauer M400 Tread Predator 2: Jungle Green 5.56 NATO Rifle](https://gunsnation.com/p/sig-sauer-m400-tread-predator-2-jungle-green-5-56-nato-rifle/UCE3nOm5Y) | 5.56 NATO | - |
| [SIG Sauer M400 Tread V2 Tactical Pistol 5.56 NATO, 11.5" Compact Black](https://gunsnation.com/p/sig-sauer-m400-tread-v2-tactical-pistol-5-56-nato-11-5-compact-black/UCE3nP0wI) | 5.56 NATO | - |
| [Sig Sauer M400 Tread - 5.56 NATO, 16" Semi-Auto Rifle, Black](https://gunsnation.com/p/sig-sauer-m400-tread-5-56-nato-16-semi-auto-rifle-black/UCE3nOacH) | 5.56 NATO | - |
| [SIG Sauer M400 Tread V2 5.56 NATO Rifle, 16" Barrel, Black Anodized](https://gunsnation.com/p/sig-sauer-m400-tread-v2-5-56-nato-rifle-16-barrel-black-anodized/UCE3nOy5l) | 5.56 NATO | - |
| [Sig Sauer M400 Tread Predator Gen 2 - 5.56 NATO Semi-Auto Rifle, Black](https://gunsnation.com/p/sig-sauer-m400-tread-predator-gen-2-5-56-nato-semi-auto-rifle-black/UCE3nOs0o) | 5.56 NATO | - |

## Related Tags

- [Concealed Carry](https://gunsnation.com/t/concealed-carry)
- [Home Defense](https://gunsnation.com/t/home-defense)
- [Tactical](https://gunsnation.com/t/tactical)
- [Hunting](https://gunsnation.com/t/hunting)
- [Optic-Ready](https://gunsnation.com/t/optic-ready)
- [Best 9mm Handguns](https://gunsnation.com/t/best-9mm-handguns)
- [Military Classic](https://gunsnation.com/t/military-classic)
- [Match Pistols](https://gunsnation.com/t/match-pistols)

---
*Data from [GunsNation](https://gunsnation.com)*