M4E1 8" .300 Blackout Complete Upper Receiver

Aero Precision 8" .300 Blackout Complete Uppers

M4E1 8" .300 Blackout Complete Upper Receiver Product Sku: APPG600211P1

All options are currently out of stock



  • M4E1 Assembled Upper Receiver
  • Enhanced Handguard of choice
  • 8" .300 Blackout CMV Barrel
  • Low Profile Gas Block and Pistol Length Gas Tube
  • Product comes assembled
  • This assembly does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab

M4E1 Upper Features:

  • Forged from 7075 T6 aluminum
  • Precision machined to M4E1 specs
  • M4 feedramps
  • Matte black hard coat anodized Mil 8625 Type 3 Class 2
  • Laser engraved T-marks (Anodized only)
  • Comes assembled, with port door and forward assist installed
  • Accepts standard AR15/M16 components
  • Handguard mounting platform is forged into the receiver
  • Works with Aero Precision handguards but also fits most BAR-system handguards
  • Barrel nut and wrench are included

Enhanced Handguard Features:

  • 1pc free float design
  • Rail is Machined from 6061-T6 Aluminum
  • Built in Anti-Rotation tabs
  • Scalloped rails
  • Continuous top rail
  • 1.8" inside diameter fits most muzzle devices and 1.5" suppressors
  • Compatible with low profile gas blocks

8" .300 Blackout Barrel Features:

  • Length: 8"
  • Twist: 1 in 7
  • Muzzle: 5/8x24 Threaded
  • Material: 4150 Crome Moly Vanadium
  • Finish: QPQ corrosion resistant finish both inside and out
  • Gas Block: .750
  • Gas Port: .109
  • Gas System Length: Pistol
  • Weight: 18oz
  • M4 Barrel Extension
  • HP and MPI Tested
Series M4E1
Chamber .300 Blackout
Barrel Length 8"
Weight(s) -

Customer Reviews

3 Item(s)

Excellent product Review by Mark
Finish on this upper is excellent! The fit and function are awesome, this upper has worked flawlessly for me. AERO IS AWESOME! (Posted on 2/9/2016)
Incredible Value, High Quailty Review by Bill
I initially tried to buy an AAC SBR upper, but fortunately I could never had find an AAC in stock and bought an Aero Precision instead. Not only dd I save $300-$400, the Quailty of my Aero Precision is perfect. I just received my stamp and the upper ran perfectly with both supersonic and subsonic ammo. Highly recommended! (Posted on 8/17/2015)
Excellent Review by Michael
Excellent quality and craftsmanship. SBR runs awesome. I cannot wait to build an AP .308. Great job AP (Posted on 6/18/2015)

3 Item(s)

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Finish Your Build
Aero Precision AR15 Charging Handle

AR15/M4 5.56 Charging Handle

Regular Price: $19.99

Special Price $15.99