The Colt M4 Mono 5.56mm 11.5" SBR is a compact, semi-automatic rifle built around Colt’s proven M4 platform. Chambered for both .223 Remington and 5.56 NATO, this short-barreled configuration pairs an 11.5" barrel with a monolithic upper, delivering a rigid, free-floated system that supports consistent accuracy and reliable performance in a smaller footprint.

With its semi-auto action, 20+1 capacity, and included 20-round magazine, the M4 Mono 11.5" SBR is well suited for range use, training, and general-purpose defensive roles where a maneuverable rifle is preferred. The Magpul MBUS sights provide a dependable aiming solution out of the box, while Colt’s long-standing reputation for durability and craftsmanship ensures this rifle is ready for serious shooters who value proven engineering.

• Manufacturer: Colt
• Model: M4 Mono 5.56mm 11.5" SBR (LE6943)
• Caliber: .223 Remington / 5.56 NATO
• Action: Semi-Auto
• Barrel Length: 11.5"
• Number of Magazines: 1 (20-round)
• Capacity: 20+1
• Sights: Magpul MBUS