Sig Sauer M400 TREAD Predator 5.56mm NATO Semi-Auto AR-15, 16-inch Stainless Threaded Barrel, Cerakote Elite Jungle
The M400 TREAD Predator stands out with a stainless 16-inch threaded barrel capped by a smooth thread protector, a 15-inch M-LOK free-float Predator/TREAD handguard, and a flat-top upper with a Picatinny rail. The handguard is a slick-top design without a top rail, so there is not a continuous full-length top Picatinny rail. Finished in Cerakote Elite Jungle with black furniture, this USA-made AR-15 platform rifle is part of SIG's TREAD ecosystem and ships with a 30-round magazine.
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 Rifling - Sharp lands and grooves.
Specific Condition Details: The exterior shows a few light, superficial scratches and small blemishes consistent with careful handling.
What's Included
- Sig Sauer M400 TREAD Predator rifle (5.56mm NATO)
- 1x 30-round STANAG-pattern polymer magazine (detachable); visually confirmed in photos
This TREAD Predator variant pairs the M400 direct-impingement system with a stainless 16-inch barrel for durability and consistent performance. The barrel is threaded and includes a smooth thread protector for ready use with compatible muzzle devices.
A 15-inch M-LOK free-float Predator/TREAD aluminum handguard provides extended mounting real estate while keeping the barrel free-floated. The flat-top upper receiver carries a Picatinny rail for straightforward mounting of sights or optics; the handguard lacks a top rail, so there is not a continuous full-length top rail.
The rifle features a Cerakote Elite Jungle finish on the receivers and handguard, contrasted by black furniture for a clean two-tone presentation. The aluminum receiver set and handguard keep weight in check while offering strength for regular use.
Ergonomics include a black polymer stock with a QD sling socket and a SIG-branded textured polymer pistol grip. The rifle is chambered in 5.56mm NATO with a 30+1 capacity and is configured without factory sights, allowing the user to choose their preferred sighting system.

