CMMGs Upper Receiver Assembly is made from billet 7075 T6 AL, and ships with Mk3 charging handle assembly.
The Mk3 platform accepts AR10-style magazines, and is beefier and heavier than Mk4 in order to handle larger calibers. Accepted calibers are .308 Win and 6.5 Creedmoor.
|UPPER RECEIVER||BILLET 7075 T6 AL|
|CHARGING HANDLE||CMMG MIL-SPEC|