CMMG Upper Receiver Assembly, Mk4/AR15 Armor Black 55BA290

CMMG Upper Receiver Assembly, Mk4/AR15 | 55BA290

Expertly crafted from aircraft grade aluminum, CMMG® Mk4/AR15 upper receiver assemblies come with our ZEROED® Polymer Dust Cover pre-installed. Available in seven 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.

• Manufacturer: CMMG
• Model: Upper Receiver Assembly, Mk4/AR15
• SKU: 55BA290
• UPC: 810097506329
• Color/Finish: Armor Black
• Material: Billet 6061 T6 Aluminum