Aero Precision M5E1 Barreled Upper .308 Fluted Barrel – 18″


  • Chambered in .308 Winchester
  • 18” 416R stainless steel fluted barrel
  • HPT and MPI barrel
  • A2 flash hider
  • Low profile gas block and rifle length system
  • M5E1 Enhanced upper receiver
  • 15” EM-15 free float handguard
  • M-LOK attachment slots
  • Black hardcoat anodized finish


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SKUAPAR308554M69 Category

Looking for an upper receiver that can help you improve your long range precision? Check out the Aero Precision M5E1 barreled upper receiver! This top-of-the-line upper receiver features a 18” fluted barrel machined from 416R stainless steel, making it incredibly precise and accurate. The rifle length gas system and 1:10 twist rate ensures reliable performance, while the A2 style flash hider keeps muzzle flash to a minimum. Plus, the Gen 2 Enhanced EM-15 free float handguard provides a continuous picatinny top rail and M-LOK attachment slots for adding your favorite accessories. Made from 6061-T6 aluminum, this handguard is also contoured for a more comfortable grip. Other features include laser engraved T-marks, scalloped picatinny rail, and integral anti-rotation tabs.


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