MPN: APAR538105M34 / APAR538115M34 / APAR538705M34 / APAR538715M34


  • Caliber: .308 Win
  • Finish: Type III Class 2 Hardcoat Anodized or Cerakote Flat Dark Earth
  • Upper Receiver: Aero Precision M5 Upper (DPMS High Profile) - 7075-T6 Aluminum
  • Handguard: 15-Inch R-ONE or S-ONE M-LOK Handguard
  • M4 Feed Ramps: Yes
  • Muzzle Device: A2 Flash Hider
  • Barrel: 20-Inch 1:10 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 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: ~5.54 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 Stainless Steel M5 Complete Upper Assembly


The Aero Precision 20-inch .308 stainless steel complete upper assembly for M5 type rifles is compatible with DPMS Gen 1 .308 style lowers. The handguard provides plenty of room to accommodate your favorite accessories.

Competition Grade

The 20-inch barrel .308 upper is designed with both performance and weight in mind. It is built to exact standards to maintain a slim profile while providing the strength and stability that shooters expect from Aero Precision products.

Superior Quality

The barrel is made from 416R stainless steel, designed with an M4 feed ramp, an A2 flash hider, and a bead-blasted finish for durability and attractiveness. The Atlas Handguard is forged from 7075-T6 aluminum and given a type III class 2 hardcoat anodized finish. The rail provides ample room for your attachments, and a quick-disconnect sling socket is easily adjustable to the three-, six- and nine-o'clock positions for a customized setup. The assembly comes with a low-profile gas block and weighs in at just five and a half pounds with an overall length of 29.75 inches.

No Gunsmithing Required

This Aero Precision 20-inch barrel .308 upper comes fully assembled and installs easily with no special gunsmithing knowledge. Note that a bolt-carrier group and charging handle are not included with upper assembly.

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