This complete M5 upper receiver is a ready addition to any high-quality AR-308 project. The M5 upper receiver comes complete with forward assist and ejection port door, and the Picatinny rail blends seamlessly with the ATLAS R-ONE handguard to produce a truly uninterrupted top rail. Additionally, the handguard includes QD sling sockets at the 3, 6 and 9 o’clock positions as well as a multitude of M-LOK slots for the optional addition of accessories. This complete upper does not include a bolt carrier group or charging handle, but once you’ve added those parts as well as a complete lower receiver, you’ll be ready to slap steel and punch through paper. Aero Precision are one of the premier names in rifle parts and components, and Aero’s complete uppers are yet another example of their dedication to quality.

16″ .308 CMV Barrel Features:

• Twist: 1 in 10
• Threading: 5/8 x 24
• Material: 4150 Chrome Moly Vanadium
• Finish: QPQ Corrosion Resistant
• Gas Block Journal: .750
• Gas System Length: Mid-Length
• Weight: 36 oz
• DPMS Barrel Extension
• HP and MPI Tested

M5 Assembled Upper Features:

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

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.

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

Includes:

• M5 Assembled Upper Receiver
• ATLAS R-ONE Handguard of choice
• 16″ .308 CMV Barrel, Mid-Length
• Low Profile Gas Block and Mid-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.