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5.56mm is tried and true, but 22 ARC brings 22-250 performance to the lighter-weight AR15 Mk4 platform. The ENDEAVOR Mk4 upper group features a 20 inch barrel and is available in Cerakote finishes. Every ENDEAVOR Upper Group includes the bolt carrier group and a carefully curated selection of parts and accessories including ZEROED AR15 Ambi Charging Handle, ZEROED AR15 Polymer Dust Cover, and ZEROED Muzzle Brake 5.56mm. Lifetime Quality Guarantee.
Specifications
- Manufacturer:
- CMMG
- Category:
- upper-receiver
- Platforms:
- AR-15
- Interfaces:
- Muzzle thread: 1/2-28
- Weight:
- 75.2 oz (4.70 lbs)
- Length:
- 20.0"
- Required Component:
- Yes
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