M5 18" .308 SS Fluted Complete Upper Receiver w/S-ONE Handguard

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:

• M5 (.308) Threaded Assembled Upper Receiver
• 15" M-LOK ATLAS S-ONE Handguard
• 18" .308 Fluted Stainless Steel Barrel, Rifle Length
• Low Profile Gas Block and Rifle Length Gas Tube
• .308 A2 Birdcage Flash Hider
• Product comes assembled
• This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab

M5 Assembled Upper Receiver Features:

• Forged from 7075 T6 aluminum
• M4 Feedramps
• .2795 takedown pin holes
• Laser engraved T-marks
• DPMS High Profile (.210) Tang)
• Includes port door and forward assist

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 S-ONE Hanguards

18" .308 Fluted Stainless Steel Barrel, Rifle Length Features:

• .308 Winchester 18" Barrel, 1/10 twist, 416R Stainless Steel, gas port drilled
• .750 gas block journal
• Rifle length gas system
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard .308 A2 flash hider