MPN: APAR538105M27 / APAR538115M27 / APAR538705M27 / APAR538715M27


  • Caliber: .308 Win
  • Finish: Type III Class 2 Hardcoat Anodized or Cerakoted Flat Dark Earth
  • Upper Receiver: Aero Precision M5 Upper (DPMS High Profile) - 7075-T6 Aluminum
  • Handguard: 15-Inch ATLAS S-ONE or R-ONE M-LOK Handguard of choice
  • M4 Feed Ramps: Yes
  • Muzzle Device: A2 Flash Hider
  • Barrel: 20-Inch 1:10 QPQ Coated 4150 Chrome Moly Vanadium
  • 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 MPI Tested

*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


  • Weight: ~5.61 lbs.
  • Overall Length: ~29.75"


  • DPMS Gen I pattern LR308 lowers and parts

*Will not fit DPMS Gen 2 pattern lowers


  • 1x Aero Precision 20" .308 CMV M5 Complete Upper Assembly


The Aero Precision 20" 308 AR upper is an excellent choice for marksmen seeking a good platform for their custom tactical needs.

The Ideal Upper For Tactical Builds

Designed to be lightweight and low profile, and featuring Aero Precision's ATLAS attachment system, this upper was designed for supporting good weapon handling and tactical customization.

Note that the charging handle and bolt carrier group are not included, making this upper a great choice for your dream build; it is ready for the parts that you prefer.

Made For Ultimate Durability

Aero Precision made this 20" 308 AR upper to be extremely durable to offer shooters a high-quality upper they can rely on when they need it most.

Made from 7075 T6 aluminum, then coated with a Class 2 Type III Anodized Finish and with a barrel made of 4150 Chrome Moly Vanadium then QPQ Coated, this upper is ready to stand up to weather and wear.

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  • This Item: Aero Precision 20" .308 CMV M5 Complete Upper Assembly
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