Sig Sauer M400 TREAD Snakebite 5.56mm Semi-Automatic Rifle, Coyote Cerakote, 16" Threaded Barrel
Sig Sauer’s Snakebite edition of the M400 TREAD brings factory-upgraded features to the proven AR-15 platform. Released in 2020, this variant wears a Coyote Cerakote Elite finish over 7075-T6 aluminum receivers, a stainless 16-inch barrel, and a 13-inch free-float M-LOK handguard. Its modular design, mid-length gas system, and included TruGlo red dot sight make it a ready-to-run package for shooters who want modern performance without aftermarket guesswork.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent – Sharp lands and grooves.
Specific Condition Notes: The rifle exhibits a few minor surface scratches and small blemishes consistent with careful handling. The bore remains bright and shiny.
What’s Included
- TruGlo red dot sight (installed)
- Black single-point bungee rifle sling
- Tan folding rifle bipod
- 2 × 30-round Magpul PMAG Gen M2/M3 magazines
- 2 × 10-round magazines
- 1 × 5-round steel magazine
The Snakebite’s 16-inch stainless barrel is threaded 1/2-28 TPI for easy muzzle-device changes. Sig’s factory hybrid 3-prong flash hider/compensator comes installed, giving effective flash reduction and controllable recoil out of the box.
A 13-inch SIG TREAD enhanced free-float handguard, machined from 6061-T6 aluminum, provides M-LOK slots at every useful clock position while maintaining a slim feel. The full-length MIL-STD-1913 top rail mates cleanly with the upper receiver, creating uninterrupted space for optics and accessories.
The rifle’s mid-length gas system smooths recoil impulse, and the direct-impingement action keeps weight down. A Magpul MOE six-position stock in Flat Dark Earth pairs with a matching SIG polymer pistol grip for ergonomic control and color coordination with the Coyote Cerakote receivers.
Built around Sig Sauer’s TREAD accessory ecosystem, the Snakebite accepts drop-in upgrades while staying range-ready as delivered. With the included TruGlo red dot, sling, bipod, and a mix of magazines—plus its clean bore and minimal wear—this semi-auto is set for target work or varmint duty the moment it arrives.