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The CMMG 55BB40BMB Resolute MK4 is a reliable upper assembly chambered in 5.56x45mm NATO with a 16.10" barrel. This model comes equipped with a fully assembled upper that is compatible with AR-15 lower receivers, featuring a durable construction for enhanced performance.
Specifications
- Manufacturer:
- CMMG
- Category:
- upper-receiver
- Caliber:
- 5.56x45mm NATO
- Platforms:
- AR-15
- Weight:
- 8.5 oz
- Length:
- 8.0" - 9.0"
- UPC:
- 810103473492
- MPN:
- 55BB40BMB
- Required Component:
- Yes
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