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

About this product

The Sig Sauer M400 Tread V2 is an AR-style pistol built for range performance and accessory flexibility. It is chambered for .223 Rem/5.56 NATO and features an 11.5-inch cold hammer-forged barrel with a 1:7 twist rate. The design includes a free-floating M-LOK handguard and an optic-ready upper to support modern sighting options. The M400 Tread V2 ships with a 30-round polymer magazine and a Magpul BSL telescoping pistol brace.

Key Specifications

• The caliber is .223 Rem / 5.56 NATO.
• The barrel measures 11.5 inches and is cold hammer-forged steel.
• The magazine capacity is 30 rounds (one 30‑round polymer magazine included).
• The action type is semi-auto.
• The overall weight is approximately 5.9 lbs.
• The rifling twist rate is 1:7.
• The handguard type is M-LOK for accessory mounting.
• The pistol ships with a Magpul BSL telescoping brace.
• The trigger is a 2-stage match trigger.
• The muzzle device is a 3-prong flash hider.

Engineered for shooters who prioritize modularity and straightforward performance, the M400 Tread V2 brings a compact, accessory-ready platform to the range. Its cold hammer-forged barrel, M-LOK handguard and match-grade trigger combine to deliver a reliable, configurable pistol suited to range work and training. The design emphasizes durability and adaptability without unnecessary complexity.

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