The CMMG Resolute MK4 upper receiver assembly is chambered in .350 Legend and built for AR-15 platform lowers.
- Caliber: .350 Legend
- Type: Complete Upper Receiver Assembly
- Compatible Lower: AR-15 / Mil-Spec
- Barrel Length: 16.1 inches
- Material: Mil-Spec Upper Receiver
- Finish: Black
- Includes: Complete upper with handguard, bolt carrier group, charging handle
- Installation: Drop-in to any mil-spec AR-15 lower
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