7.5" Aero Precision M4E1 Keymod 300 Blackout AR-15 Upper Receiver - (AP75P300-7E1KMP)

$ 446.33

Aero Precision This upper receiver includes Aero Precision's M4E1 upper and new Gen 2 Enhanced Handguard! Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail.

Includes:

  • M4E1 Assembled Upper Receiver
  • Enhanced Handguard of choice
  • Ground Zero Precision Premium 7.5" 300 Blackout Pistol Length CMV Barrel
  • Ground Zero Precision Mod 1 .750 Steel Micro Gas Block - Phosphate Finish (Black)
  • Ground Zero Precision Seamless Stainless Steel Pistol Length Gas Tube
  • Product comes assembled
  • This complete upper includes your choice of BCG. Choose from the dropdown list above. Complete specifications for each BCG option are outlined below.
  • The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel. All NFA riles apply!

M4E1 Upper Receiver 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

Gen 2 Enhanced Handguard Features:

  • 1pc free float design
  • 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
  • Gen 2 Feature - Quick disconnect sling socket at the 3, 6 and 9 o’clock positions
  • Gen 2 Feature - Additional milling along flats to aid with gripping and add visual appeal
  • Gen 2 Feature - New profile for the continuous picatinny top rail

7.5" 300 Blackout Pistol Length Barrel Features:

  • Chamber: 300 Blackout
  • Length: 7.5"
  • Twist: 1 in 7
  • Threading: 5/8 X 24
  • Material: Chrome Moly Vanadium
  • Finish: Parkerized - Black Phosphate
  • Gas Block: .750
  • Gas System Length: Pistol
  • Weight: 15 oz
  • M4 Barrel Extension
  • HP and MPI Tested

Bolt Carrier Group:

  • Phosphate Bolt Carrier Group (Option 1): Ground Zero Precision Dead Bolt +P Premium Full-Mass Bolt Carrier Group - Carrier: 8620 Steel, Black Phosphate finish, Chrome Lined, Magnetic Particle Inspected, High Pressure Tested - No Logo, Bolt: 158 Carpenter Steel, Magnetic Particle Inspected, High Pressure Tested, Black Phosphate Finish, Gas Key: 4041 Steel, Grade 8 Fasteners, Staked to Mil-Spec
  • Nib Bolt Carrier Group (Option 2): Ground Zero Precision Dead Bolt +P Premium Full-Mass Bolt Carrier Group - Carrier: 8620 Steel, Nickel Boron finish, Chrome Lined, Magnetic Particle Inspected, High Pressure Tested, Bolt: 158 Carpenter Steel, Magnetic Particle Inspected, High Pressure Tested, Nickel Boron Finish, Gas Key: 4041 Steel, Grade 8 Fasteners, Staked to Mil-Spec
  •  QPQ Nitride Bolt Carrier Group (Option 3): Ground Zero Precision Dead Bolt +P Premium Full-Mass Bolt Carrier Group - Carrier: 8620 Steel, Black QPQ Nitride finish, Chrome Lined, Magnetic Particle Inspected, High Pressure Tested - No Logo, Bolt: 158 Carpenter Steel, Magnetic Particle Inspected, High Pressure Tested, Black QPQ Nitride Finish, Gas Key: 4041 Steel, Grade 8 Fasteners, Staked to Mil-Spec

Additional Components and Specifications:

  • 5/8 X 24 "Bird Cage" Flash Suppressor - Salt Bath QPQ Nitride Finish (NOT pinned or welded). All NFA rules apply.
  • Mil-Spec Charging Handle - 7075 T-6 Aerospace Grade Aluminum, Hard Coat Anodized (Black) to MIL-A-8625