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Aero Precision OEM AR15

Aero Precision OEM AR15

Aero Precision OEM AR15

High-End, Nearly Complete AR Includes Everything You Need – Nothing You Don’t

This fully-assembled, nearly-complete, Brownells-exclusive rifle from Aero Precision is constructed using second-to-none components to ensure the highest level of accuracy and reliability, while leaving off the handguard and buttstock – the most customized parts of an AR-15 anyway.

Take the money you’ve saved on parts you may throw away, and build the AR-15 of your dreams from the start! Simply choose the free-float handguard that fits your needs, sights, and a mil-spec buttstock, snap them on and head to the range.

M4 Aero Precision Upper Receiver

  • Mid-Length Gas & Barrel System Ideal for free-float handguards
  • 16” 5.56 NATO, 1:7 Twist Barrel with M4 feed ramps
  • Barrel is machined from 4150 Chrome Moly Vanadium steel to a Government, mid-length profile, then treated with a QPQ corrosion-resistant finish
  • ½-28 barrel thread pitch includes an installed A2 flash hider
  • M16 Bolt/Carrier Group features 8620 steel carrier with phosphate finish & chrome lining, and has a properly-staked Gas Key
  • Bolt machined from Carpenter 158 – High Pressure Tested & Magnetic Particle Inspected

Aero Precision Gen 2 Lower Receiver

  • Flared mag well & upper tension screw
  • Standard AR-15 Lower Parts Kit
  • Mil-spec AR-15/M14 Buffer Kit
  • Forged from 7075 T6 Aluminum
  • Matte black hard anodized finish

Aero Precision Builder Set MultiCam Black

Aero Precision Builder Set MultiCam Black

Aero Precision Builder Set MultiCam Black


Due to high demand, we are offering backorders on this product and will be sending out an additional batch for coating.  Click here to order directly from Aero Precision.

Our August Monthly Builder Set is Multicam Black Hydrodip! This package deal features the finished pieces you need to assemble your own Multicam Black AR15 M4E1 Rifle, including an M4E1 Upper Receiver, Gen 2 Lower Receiver, 12″ KeyMod Handguard and Billet Trigger Guard all custom Multicam Black Hydrodip. Stand out at the range with a unique and eye catching build. This is a one time offer for this color – once they are gone, they are gone!


  • M4E1 Enhanced Upper Receiver
  • AR15 Gen 2 Stripped Lower Receiver
  • 12″ KeyMod Handguard
  • Billet Trigger Guard
  • All 4 pieces are finished in Multicam Black Hydrodip

Hydrodip done by Joint Force Enterprises, an industry leader in custom firearms coatings.


Aero Precision Builder Set MultiCam Black

Aero Precision M5E1EK2 FDE | 308 AR Semi Auto | Rifle

Aero Precision M5E1EK2 FDE AR 15 Semi Automatic Assault Rifle

Aero Precision M5E1EK2 FDE 308 AR Rifle

The Aero Precision M5E1EK2 FDE 308 features a custom integrated upper receiver and hand guard system. This extremely rigid design allows for a stronger handguard mounting platform to accommodate a multitude of optic requirements. The handguard system is free-floated, giving the owner superior performance and accuracy.

All complete rifles are assembled by our professional gunsmiths and are tested prior to leaving our facility. Buy with confidence when you purchase an Aero Precision Complete Rifle.

Aero Precision M5E1EK2 FDE 308 Upper Features:

  • Upper: M5E1 Enhanced Upper Receiver in FDE Cerakote
  • Barrel: 16″ .308, Mid-Length, 1:10 Twist, 4150 Chrome Moly Vanadium, QPQ corrosion resistant finish
  • Handguard: Enhanced Series Handguard of choice
  • Gas System: Low Profile Gas Block and Mid-Length Gas Tube
  • Bolt Carrier Group: 8620 Steel, Phosphate Finish, Properly Staked, 7.62 Bolt
  • Muzzle Device: Standard A2 Flash Hider

Aero Precision M5E1EK2 FDE 308 Lower Features:

  • Lower: M5 Lower Receiver with tension screw and integrated trigger guard
  • Lower Parts Kit: Standard M5 .308 Lower Parts Kit
  • Buffer Kit: Standard Mil-Spec M5 .308 Buffer Kit
  • Stock: Magpul STR Stock
  • Grip: Magpul MOE Grip

M5E1 Complete Rifle, 16″ .308 Barrel, EK-12 Handguard – FDE Cerakote Product Sku: APCR308012

Aero Precision M5E1EK2 FDE 308 AR