The Resolute MK4 300BLK Assembled Upper 14.5'' BBL with P&W Brake by CMMG is a precision-engineered firearm component designed for the AR-15 platform. This upper receiver is chambered in 300 AAC Blackout and features a 14.5-inch barrel with a pinned and welded muzzle brake, ensuring compliance with overall length requirements while enhancing recoil management.

Ideal for range use and training, this upper receiver offers versatility and performance. Its mid-length gas system and 1-7 twist rate provide reliable cycling and accuracy, making it a great choice for enthusiasts and professionals alike. CMMG's commitment to quality and innovation is evident in every detail of this assembled upper.

Key Features:

• Manufacturer: CMMG
• Model: Resolute MK4 300BLK
• Caliber: 300 AAC Blackout
• Barrel Length: 14.5 inches
• Gas System Length: Mid-Length
• Muzzle Threads: 1/2"x28
• Twist: 1-7
• Finish: Cerakote
• Receiver Style: Assembled