Elevate your next firearm project with the CMMG Resolute MK4 Upper in 300 Blackout. This upper assembly is designed to seamlessly integrate with your AR15 lower offering robust performance and reliability. Featuring a 16.10-inch barrel it provides the perfect balance of precision and power. The M-LOK free-float handguard finished in Armor Black ensures a sleek look while allowing for versatile accessory mounting. The matching Armor Black receiver finish adds a cohesive and durable touch to the overall build. Perfect for enthusiasts seeking to enhance their collection with a top-tier upper group.