CMMG Resolute MK4 Upper Receiver Assembly, .22 ARC 16.1in Barrel, 15in M-LOK, 28B260CMB

Product Description The CMMG Resolute MK4 upper in .22 ARC is built to deliver consistent AR-15 platform function with high-performance external ballistics. Featuring a 16.10 inch barrel and a 15 inch M-LOK handguard, this upper is designed for a lightweight, durable setup with ample mounting capability for accessories. Its 7075-T6 aluminum receiver and Midnight Bronze Cerakote finish provide strength and corrosion resistance for hard use across precision shooting, hunting, competition, and tactical applications. Product Highlights Chambered in .22 ARC (Advanced Rifle Cartridge) for high-velocity, flat-shooting performance in an AR-15 format 16.10 inch barrel paired with a CMMG Zeroed muzzle brake for controlled shooting and reduced muzzle rise 15 inch M-LOK handguard offers extended grip surface and flexible accessory mounting 7075-T6 aluminum upper receiver for a strong, lightweight build Midnight Bronze Cerakote finish for enhanced durability and a premium appearance Specs Brand: CMMG Model: Resolute Upper (MK4 platform) Caliber: .22 ARC (Advanced Rifle Cartridge) Barrel Length: 16.10 in (listed as 16.1 in on some sources) Barrel Material: 4140 steel Twist Rate: 1:7 Muzzle Device: CMMG Zeroed Muzzle Brake Thread Pattern: 1/2 x 28 Handguard: 15 in M-LOK Receiver Material: 7075-T6 aluminum Finish/Color: Midnight Bronze Cerakote Weight: 5.08 lb UPC: 810148627355 Manufacturer Part Number: 28B260CMB Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&’;s manufacturer.