Expertly crafted from aircraft grade aluminum, CMMG Mk4/AR15 upper receiver assemblies come with a ZEROED Polymer Dust Cover pre-installed. Available in six different Cerakote finishes, this upper receiver omits the forward assist for those looking for a sleek and stylish base to start a new AR15 build.
Specifications:
- Platform: MK4/AR-15
- Upper receiver: Billet 6061 T6 Aluminum
- Finish: Armors Black Cerakote standard
- NO Forward Assist.Â
SKU: APRH100399C
SKU: APAR308503C
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