CMMG Resolute MK4 AR-15 Rifle 5.7x28mm 16″ Barrel 32 Rounds

Demand for personal defense weapons chambered in calibers like 5.7x28mm has been steadily growing over the years but picking the right platform can be a tough decision. If the modularity of the Mk4 – AR15 platform piques your interest, then this RESOLUTE Mk4 in 5.7x28mm is the thing for you. Instead of using pistol magazines, this RESOLUTE uses CMMG’s new generation of 5.7 magazines that fit standard AR15 magwells for maximum modularity.