Sig Sauer M400 Tread V2 Pistol, 5.56 NATO, 11.5 in

The Sig Sauer M400 Tread V2 is an AR-style pistol configured for compact handling and accessory flexibility. It is chambered in 5.56 NATO and equipped with an 11.5-inch cold hammer-forged barrel and a free-floating M-LOK enhanced handguard. The platform ships with a Magpul BSL telescoping pistol brace and a single 30-round magazine, and uses a carbine-length gas system.

Key Specifications

• Chambered in 5.56 NATO.
• Barrel length is 11.5 inches.
• Action type is Semi-automatic.
• Includes one 30-round polymer magazine (30-round capacity).
• Operating system is a Carbine-length gas system.
• Handguard is a M-LOK free-floating enhanced handguard.
• Barrel material is cold hammer-forged steel.
• Barrel finish is chrome.
• Twist rate is 1:7.
• Weight is 5.9 lbs.

Built for adaptable range use and practical field applications, the M400 Tread V2 combines a compact, durable barrel package with a rigid M-LOK platform and a high-capacity magazine configuration. Its anodized finish and proven operating system make it a pragmatic choice for shooters seeking a capable, configurable AR-style pistol for serious training and utility-oriented roles.