The CMMG 30BC40AMB Resolute MK4 is a testament to precision engineering and design excellence. This upper group, chambered in 300 Blackout, features a 16.10" barrel and a Midnight Bronze M-LOK Free-Float Handguard, making it a versatile choice for AR-platform enthusiasts. Its standout feature is the ease of pairing with any AR15 lower group, offering seamless integration and enhanced performance.

Ideal for range time and training, the Resolute MK4 is a staple for any firearm collection. CMMG's reputation for innovation and quality craftsmanship ensures that this upper group meets the highest standards of reliability and performance.

Key Features:
- Manufacturer: CMMG
- Model: Resolute MK4
- Caliber: 300 Blackout
- Barrel Length: 16.10"
- Handguards: M-LOK Free-Float
- Receiver Finish: Midnight Bronze
- Thread Pattern: 5/8"x24
- What's In The Box: Upper Receiver Only