AERO PRECISION EPC-9 9X19 ATLAS R-ONE M-LOK® Complete Upper BLK 5.5"

High quality Complete Upper Receiver with EPC-9 Blowback Bolt Carrier Group and Charging Handle. 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. Includes: EPC-9 Upper Receiver Included EPC-9 Direct Blowback BCG Included Charging Handle Standard Included A2 Flash hider 4.8" ATLAS R-ONE Handguard 5.5" 9mm CMV Barrel 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 5.5" 9mm Barrel Features: Chamber: 9x19 / 9mm Luger Length: 5.5" Twist: 1 in 10 Threading: 1/2"x28 Material: Chrome Moly Vanadium Finish: QPQ corrosion resistant finish both inside and out C.I.P. MADE IN THE USA