Aero Precision M5E1 20″ .308 CMV Complete Barreled Upper

Aero Precision M5E1 20″ .308 CMV Complete Barreled Upper


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SKU: APPG308554P27


M5E1 20″ .308 CMV Complete Barreled Upper

Manufactured and Assembled in the USA by Aero Precision

This M5E1 20″ .308 CMV Complete Barreled Upper comes fully assembled and ready to attach to your DPMS-type AR10 lower receiver. This complete barreled upper does not include a BCG or Charging Handle, however Arm or Ally has several options to choose from below without any additional shipping charges. We also offer this same barreled upper with a 416R Stainless Barrel.


  • M5E1 Assembled Upper Receiver
  • Gen 2 Enhanced Handguard of choice
  • 20″ .308 Winchester Rifle Length Barrel
  • Low Profile Gas Block & Rifle Length Gas Tube

M5E1 Upper Receiver

  • Forged from 7075 T6 Aluminum
  • Precision Machined
  • M4 Feedramps
  • Laser Engraved T-Marks (Anodized only)
  • .2795″ takedown pin holes
  • Accepts standard DPMS .308 components
  • Comes with forward assist and port door installed
  • Handguards mounting platform is forged into the receiver

Gen 2 Enhanced Handguard Features

  • Added quick disconnect sling socket at the 3,6, and 9 o’clock positions
  • Milled additional surfaces along the flats to aid with gripping and add visual appeal
  • New profile of the picatinny top rail
  • 1pc free float design
  • Rail is machined from 6061-T6 Aluminum
  • Built in anti-rotation tabs
  • Scalloped rails
  • Continuous top rail
  • 1.72″ inside diameter fits most muzzle devices and 1.5″ suppressors
  • Compatible with low profile gas blocks

20″ .308 Winchester Rifle-Length Barrel Features

  • Twist: 1:10
  • Threading: 5/8 x 24
  • Material: 4150 Chrome Moly Vanadium Steel
  • Finish: QPQ Corrosion Resistant Finish both inside and out
  • Gas Block Journal: .750
  • Gas System: Rifle Length
  • Weight: 59.68 oz
  • DPMS Barrel Extension
  • HP and MPI tested.

Product Information

Item#: APPG308554P27
Manufacturer: Aero Precision
Barrel Length: 20″
Handguards: Gen 2
Other: Bolt Carrier Group NOT included.
MSRP: As low as $555.00

Additional information

Weight60 oz
Dimensions5 × 5 × 34 in

Aero Precision

Part Type

Upper Receiver Parts



Barrel Length



.308, 308 Win

Barrel Finish

CPQ Corrosion Resistance


4150 Chrome Moly Vanadium