Sig Sauer M400 TREAD V2 | 5.56 NATO | 16″ SS Barrel | 30rd

The Sig Sauer M400 TREAD V2 is an optics-ready modern sporting rifle chambered for .223 Rem / 5.56 NATO. It pairs a corrosion-resistant 16-inch stainless steel barrel with a free-floating M-LOK enhanced handguard and a mid-length gas system for smoother operation. The rifle ships with a SIG Matchlite 2-stage trigger and a Magpul SL-K telescoping stock for a familiar fit and adjustable cheek weld. A versatile low-power variable optic such as a 1-8x or 1-6x (for example, the Vortex Strike Eagle series) is a compatible option priced well under $1000 that will work across typical ranges for this platform.

Common use cases include range training and competition shooting, where the rifle’s ergonomics, trigger, and mid-length gas system support controlled follow-up shots and consistent performance.

Product Specifications

• The caliber is .223 Rem / 5.56 NATO.
• The barrel length is 16 inches and is made of stainless steel for corrosion resistance.
• The rifle uses a mid-length gas system for smoother cycling.
• The handguard is a free-floating M-LOK enhanced design for accessory mounting.
• The trigger is a SIG Matchlite 2-stage unit for enhanced control.
• The stock is a Magpul SL-K telescoping design for adjustable length of pull.
• The magazine capacity is 30 rounds and one 30-round magazine is included.
• The action is semi-automatic.
• The barrel twist rate is 1:8.
• The finish is black anodize on the receiver with a natural stainless barrel.
• The overall weight with magazine is approximately 7 pounds.
• The rifle is classified as a modern sporting rifle.
• Sights are optic-ready (no iron sights included).
• The muzzle device is a 3-prong flash hider.
• The UPC is 798681688005.

Designed for shooters who value straightforward performance and familiar AR ergonomics, the M400 TREAD V2 brings factory-match features—such as a two-stage trigger and Magpul furniture—into an optics-ready package. The stainless steel barrel and mid-length gas system contribute to consistent recoil characteristics and accuracy potential, while the M-LOK handguard provides a low-profile mounting solution for accessories without adding unnecessary weight. Whether preparing for competition stages or extended range sessions, this configuration delivers a balanced set of features for practical, repeatable performance.

Related Videos: