Brand: CMMG
Model: Resolute
Caliber: 9mm
Platform: AR, Mk4, Mk9, Mk17, MKGs
Barrel: 16.1", 4140CM, SBN
Color: Armor Black
Finish: Cerakote
Operating System: Radial Delayed Blowback
Muzzle Device: CMMG Zeroed Muzzle Brake
Muzzle Thread: 1/2 x 28
Twist: 1:10
Receiver: Billet 6061 T6 Aluminum
Handguard: CMMG EML 15"
Attachment Style: M-Lok
BCG: Yes
Charging Handle: Zeroed AR-15 Ambi Charging Handle
Weight: 4 lbs
Length: 25.3"

Features

CMMG 9mm PCC Upper – Radial Delayed Performance, Built for Versatility

If you're building the ultimate 9mm pistol caliber carbine, CMMG sets the standard. Their innovative Radial Delayed Blowback™ system delivers one of the softest, smoothest shooting experiences in the PCC world—paired with CMMG’s signature design and reliability.

This upper group is engineered for broad compatibility, working seamlessly with a range of lower receivers. Whether you're using a standard AR-15 lower with AR-9 conversion mags or one of CMMG’s dedicated pistol magazine lowers like the MK9, MKG, or MK17, you have the flexibility to tailor your perfect build.

Originally developed for CMMG’s .45 ACP MKG line, the Radial Delayed Blowback system has been expanded across their entire PCC lineup. Compared to traditional blowback systems, it reduces felt recoil and allows for a lighter bolt carrier, improving overall performance and control.

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Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

Local Law Compliance

Certain firearm parts and accessories, including AR-style upper receivers, are subject to complex and frequently changing federal, state, and local laws and regulations. While an upper receiver may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using an upper receiver in certain states (e.g., California, Washington State) and localities depends on how it is assembled, combined with other components, and ultimately used. You are solely responsible for ensuring that any assembly, configuration, possession, or use complies with all federal, state, and local laws, including any so-called “assault weapon” bans and short-barreled rifle restrictions. We do not provide legal advice and are not responsible for unlawful configurations or uses.