Quantity in Stock: CMMG Upper Receiver Assembly Mk4 / AR15 Upper Receiver - Armor Black
Expertly crafted from aircraft grade aluminum, CMMG Mk4/AR15 upper receiver assemblies come with our ZEROED Polymer Dust Cover pre-installed. This upper receiver omits the forward assist for those looking for a sleek and stylish base to start a new AR15 build.- PLATFORM MK4
- UPPER RECEIVER BILLET 6061 T6 ALUMINUM
