MPN: APAR640232M53


  • Caliber: 6.5 Grendel
  • Finish: Type III Class 2 Hardcoat Anodized Finish
  • Upper Receiver: Aero Precision M4E1 Enhanced Upper - 7075-T6 Aluminum
  • Handguard: Enhanced M-LOK Handguard
  • M4 Feed Ramps: Yes
  • Muzzle Device: A2 Flash Hider
  • Barrel: 20" 1:8 Twist 416R Stainless Steel Barrel
  • Muzzle Thread Pattern: 5/8"-24 TPI
  • Gas Block: Aero .750" Low-Profile Gas Block
  • Gas Tube: Rifle-Length Gas tube
  • Bolt Carrier Group: Not Included
  • Charging Handle: Not Included
  • HP and TPI Tested

*This upper assembly does not come with Bolt Carrier Group and Charging Handle


  • Weight: ~4.66 lbs.
  • Length: ~28.4"


  • AR-15 lower receivers


  • 1x Aero Precision 20" 6.5 Grendel M4E1 Enhanced Complete Upper Assembly


The Aero Precision 6.5 Grendel Upper was strategically designed for shooters who demand high performance from their weapons and demand accessories that are built to last.

Improved Accuracy

The Aero Precision 6.5 Grendel Upper offers shooters lower recoil, which may improve accuracy. Aero Precision tested this upper and saw successful results at 1000+ yards.

Manufactured For Ultimate Durability

The barrel is made from Stainless Steel, the rail is made from 6061-T6 Aluminum, and the upper is made from 7075 T6 aluminum, then the entire upper is coated with a Class 2 Type III Hardcoat Anodized Finish to maximize the upper's durability against weather and wear.

Aero Precision knows that you will be eager to start using your upper, so it arrives assembled, the forward assist and the port door are also installed.

Before you can put this upper into use, you will need a 6.5 Grendel bolt carrier and a standard AR-15 charging handle.

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Frequently Bought Together

  • This Item: Aero Precision 20" 6.5 Grendel M4E1 Enhanced Complete Upper Assembly
    MSRP: $765.00
    (You save $75.01 )

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