• Fully assembled with CMMG ZEROED Mk3 Polymer Dust Cover
  • Full Mil-Spec 1913 Picatinny top rail
  • M4 style feed ramps
  • No forward assist for a sleek and stylish look
  • Accepts Gen I DPMS LR-308 style .308 AR components


  • Material: 7075-T6 Aluminum
  • Finish: Cerakoted
  • Weight: 11.99 oz.


  • DPMS Gen I pattern LR308 lowers and parts

*Will not fit DPMS Gen 2 pattern lowers


CMMG is famous for making some of the best firearms and firearm parts out there. They offer excellent AR parts for rifles in various calibers. If you're keen on building an AR pattern rifle chambered in .308 Winchester, their CMMG Mk3 .308 Upper Receiver is a fantastic choice.

Stylish Design X Uncompromising Performance

This receiver has an excellent and stylish design. It's made from durable 7075-T6 aluminum and has an amazing Cerakote finish. Its minimalist style ditches the forward assist, resulting in a more stylish and lightweight appearance.

The CMMG Mk3 .308 Upper Receiver doesn't compromise functionality either. It features a full-length Mil-Spec 1913 Picatinny top rail, perfect for mounting optics, and M4-style feed ramps that greatly improve feeding reliability.

Craftsmanship and Compatibility

When it comes to quality, the CMMG Mk3 .308 Upper Receiver doesn't disappoint. It's designed with extreme attention to detail and made with great pride in the USA, following the highest production standards. Not to mention, it's specifically designed to accept Gen I DPMS LR-308 style .308 AR components, making assembly a breeze.

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