SIG Sauer M400 TREAD V2 AR-15 Rifle 5.56 NATO 16" Optics Ready

Quick Overview

The SIG Sauer M400 TREAD V2 is a modern 5.56 NATO AR-15 rifle built for shooters seeking reliability, accuracy, and customization in a lightweight platform. Featuring a 16-inch stainless steel barrel, mid-length direct impingement gas system, free-floating M-LOK handguard, and SIG's Matchlite Duo two-stage trigger, the M400 TREAD V2 delivers enhanced performance for range use, home defense, training, and recreational shooting.

Designed as an optics-ready platform, the M400 TREAD V2 combines premium features with proven AR-15 compatibility, giving shooters a versatile rifle that performs right out of the box while remaining easy to upgrade and personalize.

Key Benefits

• 16" Stainless Steel Barrel: Excellent durability and accuracy potential
• Mid-Length Gas System: Smooth recoil impulse and reliable cycling
• SIG Matchlite Duo Trigger: Crisp two-stage trigger for improved precision
• Free-Float M-LOK Handguard: Allows accessory mounting without affecting barrel harmonics
• Ambidextrous Controls: Enhanced usability for right- and left-handed shooters
• Optics Ready Platform: Configure with your preferred red dot, LPVO, or magnified optic

What's Included

• SIG Sauer M400 TREAD V2 Rifle
• 30-Round Polymer Magazine
• SIG 3-Prong Flash Hider
• User Documentation

Best For

• Home defense
• Range shooting and training
• Tactical applications
• General-purpose AR-15 use

Enhanced Barrel Performance

The M400 TREAD V2 features a 16-inch stainless steel barrel with a 1:8 twist rate, making it well-suited for a wide range of popular 5.56 NATO and .223 Remington ammunition. The threaded muzzle includes a SIG 3-prong flash hider to help reduce visible muzzle flash.

Matchlite Duo Two-Stage Trigger

SIG Sauer equips the M400 TREAD V2 with its Matchlite Duo two-stage trigger, providing a clean and predictable break that enhances control and precision compared to standard mil-spec triggers.

Free-Floating M-LOK Handguard

The TREAD Enhanced aluminum handguard features M-LOK attachment slots for lights, lasers, grips, and other accessories while maintaining a free-floating barrel design for improved accuracy potential.

Ambidextrous Rifle Controls

Fully ambidextrous controls make the rifle easier to operate from either shoulder and improve overall handling for a wider range of shooters.

Magpul Furniture

The included Magpul SL-K six-position adjustable stock offers a compact profile, comfortable cheek weld, and flexible length-of-pull adjustment to fit various shooting positions and body types.

Product Specifications