SIG Sauer RM40016BTRDV2G M400 556 5.56 NATO 56-Round Carbine

The SIG Sauer M400 Tread 2.0 5.56 NATO carbine is a modern sporting rifle purpose-built for tactical professionals, law enforcement, and serious civilian shooters who demand reliability in high-stress environments. Chambered in 5.56 NATO, this 16-inch carbine delivers the balance of maneuverability and ballistic performance that defines modern duty and patrol rifles. Whether deployed for home defense, duty use, or precision shooting applications, the M400 Tread 2.0 platform has earned credibility across military and law enforcement communities through consistent performance and proven ergonomics.

Built on SIG's refined AR-platform architecture, the M400 Tread 2.0 features a 16-inch barrel optimized for 5.56 NATO ballistics, delivering velocity and accuracy suitable for intermediate to extended-range engagement. The rifle's 8-pound weight—light enough for extended handling yet substantial enough for recoil management—provides the stable platform necessary for duty-grade shooting. The Tread 2.0 designation reflects SIG's second-generation improvements in ergonomics, controls accessibility, and rail integration, allowing users to mount optics, lights, and tactical accessories without compromise. A modular design philosophy ensures compatibility with standard AR-15 accessories and allows customization to meet specific mission requirements or personal preference.

Law enforcement agencies, military units, and civilian operators benefit most from the M400 Tread 2.0's combination of reliability and tactical flexibility. The compact 34.4-inch overall length facilitates vehicle deployment, room-clearing, and transportation in tactical operations or patrol environments. Accuracy potential and ergonomic control layout make this carbine suitable for both precision shooting and rapid-fire defensive scenarios. Users seeking a proven, manufacturer-backed 5.56 platform will find the M400 Tread 2.0 a serious contender; its proven track record in professional hands and broad accessory compatibility ensure longevity and adaptability to evolving mission profiles. Federal Firearms License (FFL) transfer required for purchase.