M5 18" .308 SS Complete Upper Receiver w/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:

• M5 Assembled Upper Receiver
• ATLAS R-ONE Handguard of choice
• 18" .308 SS Barrel, Rifle Length
• Low Profile Gas Block and Rifle Length Gas Tube
• Product comes assembled
• This complete upper does not include a BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab.

M5 Assembled Upper 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 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
• 1.5" Inside diameter
• 1.75" Outside diameter
• Compatible with AR-308 Upper Recievers with a thread pitch of 1-7/16 x 16 along with a DPMS High Profile (.210) Tang Rail
• Learn More about our NEW ATLAS Handguards

18" .308 Stainless Steel Barrel Features:

• Twist: 1 in 10
• Threading: 5/8 x 24
• Material: 416R Stainless Steel
• Finish: Bead Blasted
• Gas Block Journal: .750
• Gas System Length: Rifle Length
• Weight: 51.2 oz
• DPMS Barrel Extension
• HP and MPI Tested