Sig Sauer M400 TREAD V2 5.56 NATO 16 in Concrete

The Sig Sauer M400 TREAD V2 is a modern sporting rifle built around user-driven upgrades, pairing a free-floating enhanced handguard with a 16 inch stainless steel barrel. The V2 adds an upgraded Matchlite two-stage trigger and retains a mid-length gas system for smooth cycling and predictable recoil. Standard ergonomics include an ambidextrous safety, Magpul SL-K telescoping stock and integrated QD sling mounts on the lower receiver.

Key Specifications

• Caliber is .223 Rem / 5.56 NATO.
• The barrel measures 16 inches and is stainless steel.
• The twist rate is 1:8.
• The muzzle device is a SIG 3-prong flash hider.
• Action type is Semi-Auto.
• The operating system is Mid-length direct impingement.
• The stock is a 6-position Magpul SL-K telescoping stock.
• Magazine capacity is 30 rounds and includes one 30-round polymer magazine.
• Overall weight is 6.5 lb.
• The handguard is an enhanced free-floating M-LOK TREAD handguard.

Engineered for practical range use and adaptable configurations, the M400 TREAD V2 provides a balanced platform for training, competition, and duty applications. Its accessory-ready handguard and optics-ready upper make it straightforward to outfit to individual preferences while maintaining rugged, user-focused ergonomics.