CMMG 55AC20AAB Banshee MK4 5.56 NATO 12.5" 31-Round Threaded Barrel Carbine

The CMMG Banshee MK4 5.56 NATO 12.5" carbine is a compact, purpose-built platform engineered for operators who demand versatility without compromising velocity or ergonomics. This firearm is ideal for law enforcement tactical teams, military support roles, and civilian shooters prioritizing compact firearm handling. It is designed for tight-quarters tactics, vehicle operations, and home defense scenarios.

The 12.5-inch barrel represents the optimal balance between velocity retention in 5.56 NATO and overall weapon length. Built on CMMG's proven Banshee platform, this MK4 generation carbine features a fully threaded barrel accommodating suppressors, muzzle brakes, or flash hiders without permanent modification. The 31-round magazine capacity provides sustained firepower during extended engagements.

Professional end-users including tactical operators, military personnel, and certified defensive shooters benefit from this carbine's responsive handling characteristics and predictable ballistics. The 5.56 NATO chambering ensures compatibility with military-standard ammunition inventories and delivers reliable, consistent performance across variable environmental conditions and engagement distances from close quarters to 400 meters.