Colt M4 Carbine Mk4 5.56 NATO 16" 30-Round Carbine

The Colt M4 Carbine Mk4 5.56 NATO 16" 30-Round Carbine represents the gold standard in modern carbine platforms trusted by law enforcement and military units worldwide. Chambered in 5.56 NATO, this 16-inch carbine delivers the optimal balance of maneuverability and ballistic performance required for close-quarters engagement and intermediate-range tactical operations. Its proven reliability and ergonomic design make it the preferred choice for professionals who demand uncompromising accuracy and durability when the stakes are highest.

Built on Colt's flat-top receiver platform, the Mk4 features a full-length Picatinny rail for mounting optics, magnifiers, and tactical accessories without compromise. The 16-inch barrel length strikes the critical balance between velocity retention and handling—short enough for vehicle operations and building clearance, yet long enough to maintain supersonic 5.56 NATO velocity downrange. Weighing 9.13 pounds with a fully loaded 30-round magazine, the platform remains controllable during extended operations while the M4-profile barrel aids rapid heat dissipation. The direct impingement operating system ensures consistent cycling with both military-spec and commercial ammunition variants.

This carbine is purpose-built for tactical teams, military personnel, law enforcement operators, and serious civilian shooters who require a platform tested in actual operations. The 30-round magazine capacity provides combat-proven capacity for force engagement scenarios while remaining compliant in most jurisdictions. The Mk4's modular rail system accepts industry-standard AR-15 accessories, enabling rapid reconfiguration for specialized missions—from mounted optics to tactical lights and foregrips. Its compact overall length of 40.75 inches makes it ideal for vehicle deployment, entry operations, and confined-space engagement while maintaining the shooting ergonomics professionals depend on.