To build your best AR rifle, use the CMMG Resolute 300 Upper Receiver. This comes with a 16-inch barrel, featuring CMMG's patented Radial Delayed Blowback operating system. It also comes equipped with a pre-installed CMMG Ambi Charging Handle, CMMG SV Brake, and a CMMG RML15 M-LOK Handguard as well as 3-30 round magazines chambered in 9mm. Get the best AR platform parts at affordable rates from GrabAGun today!
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The RESOLUTE 300 9mm upper receiver has a 16.1-inch barrel and features CMMG’s patented Radial Delayed Blowback operating system. The receiver and handguard are hard coat anodized and come with a pre-installed CMMG Ambi Charging Handle, CMMG SV Brake, and a CMMG RML15 M-LOK Hand Guard. This package ships with three 30-round 9mm AR Conversion Magazines.
Resolute 300 Upper Receiver Specifications
CALIBER: 9×19
BARREL: 16.1” 1:10 Twist, Medium Taper 4140CM, SBN
MUZZLE: SV Brake, threaded 1/2-28
GAS PORT LOCATION: N/A
RECEIVER: Forged 7075-T6 AL M4 type upper
HANDGUARD: CMMG RML15 M-Lok handguard
FINISH: Hard Coat Anodized Receivers and Hand Guard (Can be upgraded to Cerakote)
