AERO PRECISION M4E1 5.56 ATLAS R-ONE Complete Upper 14.5" FDE

High quality Complete Upper Receiver with Bolt Carrier Group and Charging Handle.

This complete upper includes our new 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:

• M4E1 Threaded Assembled Upper Receiver
• Included Phosphate BCG, with Chrome lined gas key and bolt channel
• Included Charging Handle 
• Included A2 Flash Hider
• ATLAS R-ONE M-LOK Handguard
• 14.5" 5.56 Nato/.223 REM CMV Barrel
• Low Profile Gas Block and Mid Length Gas Tube
  
• Product comes assembled

M4E1 THREADED UPPER RECEIVER FEATURES:

• New enhanced forging that gives the upper receiver a "billet look"
• New picatinny profile that blends seamlessly with our Enhanced Series Handguards
• M4 Feedramps
• .250 Takedown Pin Holes
• Laser engraved T-marks
• Includes port door and forward assist installed
• Finish: Magpul FDE Cerakote
  

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
• Compatible with low profile gas blocks
• 1.3” Inside diameter
• 1.5” Outside diameter
• Compatible with mil-spec AR15 upper receivers and barrels
• Finish: Magpul FDE Cerakote

14.5" 5.56 Nato/.223 REM Barrel Features:

• Twist: 1 in 7
• Muzzle: 1/2x28 UNEF Threaded
• Material: 4150 Crome Moly Vanadium
• Finish: QPQ corrosion resistant finish both inside and out
• Gas Block Journal: .750
• Gas Port: .0785
• Gas System Length: Mid
• M4 Barrel Feed Ramp Extension
• HP and MPI Tested

Informations:

• Included C.I.P.
• No pinned or welded Muzzle Device
• Compatible with AR-15 MIL-SPEC Lower Receivers 
• To place an order, contact your local firearm dealer
• EXPORT on request, only for firearm dealers

MADE IN THE USA