Elevate your firearm assembly with the CMMG Resolute MK4 Upper Group. This upper group is expertly chambered for 5.56 NATO providing reliability and performance for any enthusiast. It features a 16.10-inch barrel that offers a balanced length for accuracy and maneuverability. The M-LOK free-float handguard finished in Armor Black ensures enhanced modularity and durability. With its sleek Armor Black receiver finish this upper group is designed to seamlessly integrate with your AR15 lower group making it a versatile addition to your collection.