SIG Sauer M400 SDI-X 5.56 NATO Black AR-15 Style Rifle

Description

Product Overview

The SIG Sauer M400 SDI-X is a 16-inch, 5.56 NATO AR-15 style rifle built with input from professional instructors at SIG SAUER Academy. It features fully ambidextrous controls, a rigid free-floating handguard with a four-side accessory interface, and a SIG 2-stage Matchlite Duo trigger for a crisp precision feel. Designed for reliability and repeatable performance, it includes a Magpul SL stock and a threaded barrel for accessory compatibility.

Key Features

• 16-inch 5.56 NATO threaded barrel for compatibility with common muzzle devices
• Fully ambidextrous bolt catch/and release controls for left- and right-handed shooters
• Rigid free-floating handguard with reduced deflection and four-side accessory mounting
• Low-profile gas block with mid-length gas system for balanced operation
• SIG 2-stage Matchlite Duo trigger with a crisp 2-stage pull feel

Built around instruction-focused ergonomics and durable performance coatings, the M400 SDI-X is ready for shooters who want precision and capability in an AR-15 platform.