Aero Precision - M4E1 Threaded Complete Upper, 18" .223 Wylde QPQ Rifle Length Barrel, 16.6" ATLAS R-One M-LOK 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
• 16.6" ATLAS R-ONE M-LOK Handguard
• 18" .223 Wylde Stainless Steel QPQ Barrel, Rifle Length
• Low Profile Gas Block and Mid-Length Gas Tube
• Product comes assembled
• Does NOT include BCG and 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

18" .223 Stainless Steel QPQ Rifle Length Barrel Features:

• .223 Wylde 18" Rifle Length Barrel, 1/8 Twist
• QPQ Corrosion Resistant Finish
• .750 gas block journal
• Rifle length gas system
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard A2 flash hider