This EPC-9 Complete Upper Receiver comes standard with the 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. Theproprietary 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.
 
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.
 
INCLUDES:
EPC-9 Upper Receiver
7.3" ATLAS R-ONE Handguard
8.3" 9mm CMV Barrel
Product comes assembled
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
ATLAS 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
8.3" 9MM BARREL FEATURES:
Chamber: 9x19
Length: 8.3"
Twist: 1 in 10
Threading: 1/2"x28
Material: Chrome Moly Vanadium
Finish: QPQ corrosion resistant finish both inside and out