This complete upper includes our ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. 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" M-LOK ATLAS S-ONE Handguard of choice
 - 18" .223 Wylde Stainless Steel QPQ Barrel, Rifle Length
 - Low Profile Gas Block and Rifle Length Gas Tube
 - A2 Flash Hider
 - Product comes assembled
 - INCLUDES BCG & CH
 
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 S-ONE Handguard Features:
- Front and rear picatinny rail
 - Eliminated center of top rail for weight reduction
 - Indexing grooves in 12:00 position for positive grip control
 - 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" .223 Wylde Stainless Steel QPQ Barrel, Rifle Length 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