Description
MPN: APAR640211Q0
Features:
Caliber: 5.56 NATO
Finish: Type III Class 2 Hardcoat Anodized
Upper Receiver: Aero Precision M4E1 Enhanced Upper – 7075-T6 Aluminum
Handguard: 7.3-Inch Gen 2 Enhanced Quad Rail Handguard
M4 Feed Ramps: Yes
Muzzle Device: A2 Flash Hider
Barrel: 7.5″ 1:7 QPQ Coated 4150 Chrome Moly Vanadium Barrel
Muzzle Thread Pattern: 1/2″-28 TPI
Gas Block: Aero .750″ Low-Profile Gas Block
Gas Tube: Pistol Length Gas Tube
Bolt Carrier Group: Not Included
Charging Handle: Not Included
MPI and HP Tested
*This upper assembly does not come with Bolt Carrier Group and Charging Handle
*This upper receiver assembly has a barrel that is shorter than 16″. This upper is only for use on AR pistol lower receivers and NFA registered Short-Barreled Rifle (SBR) lower receivers. All NFA laws apply!
Specifications:
Weight: ~2.54 lbs.
Length: ~16″
Compatibility:
AR-15 lower receiver
Includes:
1x Aero Precision 7.5″ 5.56 M4E1 Enhanced Complete Upper w/ Quad Rail
Details:
Aero Precision is known to make some incredible AR parts, and this 7.5-inch M4E1 complete upper receiver is an excellent option for any person looking to build an AR platform SBR or pistol.
It has a 7.5″ long 4150 Chrome Moly Vanadium Barrel. CMV steel barrels have multiple advantages over simple steel. CMV steel is harder, more heat resistant, and better at resisting corrosion. The barrel has a QPQ Coated finish and is threaded as well. It comes with an A2-style flash hider from the factory. The barrel is also high pressure tested and magnetic particle inspected to ensure that it doesn’t have any micro fractures on the surface of the steel.
Because of the shorter barrel, the gas system has a pistol-length gas tube. A Quad rail handguard covers the low-profile gas system. The Aero Precision Gen 2 Enhanced quad rail has sections of Picatinny rail on both sides and the bottom, with a full-length Pic rail on top.
The M4E1 receiver itself is made from 7075-T6 Aluminum. It has a forward assist, a port door, and features M4 feed ramps for better reliability.


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