Aero Precision AR-15 6.5 Grendel M4E1-T Threaded Complete Upper Receiver, 18″ Barrel, Atlas S-One M-LOK 15″ Handguard- Anodized Black

This complete upper includes Aero’s 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. Aero’s 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.

Complete Upper Includes:

• M4E1-T Threaded Upper Receiver
• 15″ Atlas S-One M-LOK  Handguard
• 18″ 6.5 Grendel Stainless Steel QPQ Barrel, Mid-Length
• Low Profile Gas Block and Mid-Length Gas Tube
• A2 Flash Hider
• Product comes assembled
• This complete upper does not include BCG or Charging Handle.

M4E1 Threaded Upper Receiver Features:

• .250 takedown pin holes
• Laser engraved T-marks
• Includes port door and forward assist installed

18″ 6.5 Grendel Stainless Steel QPQ Barrel, Rifle-Length Features:

• 6.5 Grendel 18″ Mid 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