MPN: APAR610502M29 / APAR610602M29


  • Caliber: 5.56 NATO
  • Finish: Type III Class 2 Hardcoat Anodized Finish
  • Upper Receiver: Aero Precision AR-15 Upper with No Forward Assist - 7075-T6 Aluminum
  • Handguard: 9.3-Inch ATLAS S-ONE or R-ONE M-LOK Handguard
  • M4 Feed Ramps: Yes
  • Muzzle Device: A2 Flash Hider
  • Barrel: 11.5" 1:7 QPQ Coated 4150 Chrome Moly Vanadium Barrel
  • Muzzle Thread Pattern: 1/2"-28 TPI
  • Gas Block: Aero .750" Low-Profile Gas Block
  • Gas Tube: Carbine Length Gas tube
  • Bolt Carrier Group: Not Included
  • Charging Handle: Not Included
  • HP and MPI Tested
  • Government Profile

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

*ATLAS S-ONE Handguard: Front and rear picatinny rail section. Eliminated center of top rail for weight reduction.

*ATLAS R-ONE Handguard: Full top picatinny rail

*This upper receiver assembly has a barrel that is shorter than 16". This upper is only for use on AR pistol lower receivers and NFA registered Short-Barreled Rifle (SBR) lower receivers. All NFA laws apply!


  • Weight: ~2.45 lbs.
  • Length: ~19.95"


  • AR-15 lower receiver


  • 1x Aero Precision 11.5" 5.56 Complete Upper Assembly with No Forward Assist


The Aero Precision 11.5 inch complete upper assembly with no forward assist is designed for NATO caliber 5.56 AR15s. The upper, paired with your choice of one of two handguards, improves the handling of your AR15 platform.

Improved Shooting Experience

Replacing your standard AR-15 upper with the Aero Precision 11.5" AR upper with no forward assist significantly reduces the weight of your platform. Paired with your choice of a 9.3-inch ATLAS S-ONE or R-ONE M-LOK handguard greatly increases your platform's maneuverability and speeds up target acquisition.

Superior Craftsmanship

The Aero Precision 11.5 inch 5.56 complete upper assembly with no forward assist has a .750 gas block journal and a M4 feed ramp extension for smooth and dependable ammo cycling. The 11.5" upper is cut from 7075-T6 aluminum and has a type III class 2 hardcoat anodized finish. The QPQ coated 4150 chromemoly vanadium 11.5-inch barrel is engineered for long life and has a 1/2 inch-28 TPI muzzle thread pattern to fit the included A2 flash hider. The handguard has a full top Picatinny rail for optional attachments and quick-disconnect sling sockets at the three, six, and nine- o'clock positions provide for customized sling setup. The complete assembly weighs in at just 2.4 pounds.

No-Hassle Installation

The Aero Precision 11.5 AR upper assembly comes ready to be installed and requires no special gunsmithing knowledge. Note that the upper does not come with a BCG or charging handle.

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  • This Item: Aero Precision 11.5" 5.56 Complete Upper Assembly with No Forward Assist
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