M4E1 Threaded 18" .224 Valkyrie Complete Upper Receiver w/R-ONE Handguard

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
• ATLAS R-ONE Handguard of choice
• 18" .224 Valkyrie SS Rifle Length Barrel
• Low Profile Gas Block and Rifle Length Gas Tube
• Product comes assembled
• The .224 Valkyrie is designed on the AR15 platform. You will need to purchase a .224 Valkyrie/6.8 SPC specific bolt (Purchase Here) and a 6.8 SPC magazine (not currently offered). All other components are standard to the AR15 platform. This upper assembly DOES NOT include a BCG or Charging Handle.

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

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
• Learn More about our NEW ATLAS Handguards

18" .224 Valkyrie Stainless Steel Rifle Length Barrel Features:

• .224 Valkyrie 18" Rifle Length Barrel, 1/7 Twist
• 416R Stainless Steel
• Bead Blasted Finish
• .750 gas block journal
• Rifle length gas system
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard A2 flash hider
• Barrel Weight: 41 oz