PRI Upper Receiver Assembly in FDE for Mk12, AR15, M4

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PRI Flat Top AR-15 Upper Receiver Assembly - FDE

Perfect for a Mk12 build or to mate to the FDE lower receiver from PRI.  Yes, the colors match ! 

PRI receivers are still every bit the quality soldiers came to know and love, so they make a perfect starting point for any SPR build. This Flat Top Upper Receiver is made from T6 7075 forged aluminum and is machined to MIL SPEC standards. Each receiver comes with a dust cover and forward assist. This version of the PRI upper receiver has an FDE Cerakote finish.In the early years of the GWOT, PRI’s Mk12 SPR was designed to fill the role between M4 carbines and SR25 sniper systems. Heralded for reliability and accuracy in some of the most demanding environments on earth, the Mk12 earned its place in the SOCOM arsenal. Because they were building for extreme precision, PRI became known for their standards of quality for receiver sets.


  • Mil spec Forged 7075 Aluminim Upper Receiver
  • Flat Top Picitinny Rail with engraved T-marks
  • Dust Cover
  • Forward Assist
  • FDE Cerakote
  • Weighs 9oz.
  • Marked with PRI Logo

PRI stands for Precision Reflex Incorporated. Those who know and have used PRI products understand that the name isn’t just for show. PRI rifles are some of the most accurate, combat proven AR-15s ever made, and their receivers are built to truly exacting standards as a result.