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Aero Precision EPC-9 Complete Threaded 9mm Upper Receiver w/ Atlas R-One Handguard - 11"

AR-9 Upper Receiver

Out of stock

Aero Precision EPC-9 Complete Threaded 9mm Upper Receiver w/ Atlas R-One Handguard - 11"


This EPC-9 Complete Upper Receiver comes standard with our ATLAS R-ONE Handguard. The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.


EPC-9 Upper Receiver Features:

  • Last round bolt hold open mechanism
  • Accepts most AR15 compatible barrel nuts and handguards
  • Dimple above threads to allow for proper handguard timing
  • Standard AR15 takedown/pivot pin lug pattern
  • Machined from custom forged 7075-T6 aluminum

ATAS R-ONE Handguard Features:

  • Full top picatinny rail for optional attachments
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • 1.3" Inside diameter
  • 1.5" Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels

11" 9mm Barrel Features:

  • Chamber: 9x19
  • Length: 11"
  • Twist: 1 in 10
  • Threading: 1/2"x28
  • Material: Chrome Moly Vanadium
  • Finish: QPQ corrosion resistant finish both inside and out


  • Made In America Yes
  • Platform EPC-9
  • Weight(s) 35.3 oz
  • Other N/A


  • EPC-9 Upper Receiver
  • 10.5" ATLAS R-ONE Handguard
  • 11" 9mm CMV Barrel
  • Product comes assembled
  • This complete upper receiver does not include BCG or Charging Handle. These products may be selected as add-ons under the FINISH YOUR BUILD tab.
  • The muzzle device included with this complete upper receiver is NOT pinned nor welded to this barrel.
More Information
SKU APAR620703M86
Product Type AR-9 Upper Receiver
Manufacturer Aero Precision
Thread Pitch 1/2x28
Color Black
Rail Length 10.5"
Mount M-LOK
Barrel Length 11"
Caliber 9mm