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Product Discontinued by Manufacturer

Aero Precision M4E1 10in .300 CMV Barrel Complete Upper Assembly with Flash Hider has been discontinued by Aero Precision and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Receivers yourself to try and find the perfect replacement for you!

Product Info for Aero Precision M4E1 10in .300 CMV Barrel Complete Upper Assembly with Flash Hider

This Aero Precision M4E1 Complete Upper .300 Barrel includes our 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, .300 Blackout CMV Barrel, Low Profile Gas Block and Pistol Length Gas Tube. Product comes assembled, however the muzzle brake is not pinned or welded to the barrel.image

Features of Aero Precision M4E1 10in .300 CMV Barrel Complete Upper Assembly with Flash Hider:

  • Forged from 7075 T6 aluminum.
  • Precision machined to M4E1 specs.
  • M4 feedramp extension.
  • Comes assembled, with port door and forward assist installed.
  • .300 Blackout for more power - compatible with standard AR15/M16 components.
  • Handguard mounting platform is forged into the receiver.
  • Works with Aero Precision handguards but also fits most BAR-system handguards.
  • Gen 2 Enhanced Handguard Features 1-piece free float design, built in anti-rotation tabs, scalloped rails, continuous top rail, 1.78-inch inside diameter fits most muzzle devices and 1.5-inch suppressors, compatible with low profile gas blocks, QD sling sockets at the 3, 6 and 9 o'clock positions, additional milling along flats to aid with gripping and add visual appeal, new profile for continuous Picatinny top rail.
  • Barrel made of 4150 Chrome Moly Vanadium with QPQ corrosion resistant finish.
  • Low Profile Gas Block and Pistol Length Gas Tube.
  • HP and MPI Tested.
  • Barrel nut and wrench are included.
  • Does not include BCG or charging handle.
  • Muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel. Per the National Firearms Act, the muzzle brake MUST be pinned and welded to achieve the necessary 16 inches as defined by the ATF for a rifle build.

Package Contents:

  • Aero Precision M4E1 10in .300 CMV Barrel Complete Upper Assembly with Flash Hider
  • Barrel Nut
  • Wrench

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Aero Precision M4E1 10in .300 CMV Barrel Complete Upper Assembly with Flash Hider Unavailable & Discontinued Models

List of Unorderable Models

Aero Precision M4E1 Complete Upper Receiver .300 Barrel EQ-7 HG, No BCG/Charging Handle, Anodized Black, 10in, APAR600211Q4 , MPN: APAR600211Q4 , Code: 29D-UFH-APM4ECUPB10-APAR600211Q4
Aero Precision M4E1 Complete Upper Receiver .300 Barrel EM-7 HG, No BCG/Charging Handle, Anodized Black, 10in, APAR600211M4 , MPN: APAR600211M4 , Code: 29D-UFH-APM4ECUPB10-APAR600211M4
Aero Precision M4E1 Complete Upper Receiver .300 Barrel EK-7 HG, No BCG/Charging Handle, Anodized Black, 10in, APAR600211P4 , MPN: APAR600211P4 , Code: 29D-UFH-APM4ECUPB10-APAR600211P4
Aero Precision M4E1 Complete Upper Receiver .300 Barrel EQ-7 HG, No BCG/Charging Handle, FDE Cerakote, 10in, APAR600212Q4 , MPN: APAR600212Q4 , Code: 29D-UFH-APM4ECUPB10-APAR600212Q4
Aero Precision M4E1 Complete Upper Receiver .300 Barrel EK-7 HG, No BCG/Charging Handle, FDE Cerakote, 10in, APAR600212P4 , MPN: APAR600212P4 , Code: 29D-UFH-APM4ECUPB10-APAR600212P4
Aero Precision M4E1 Complete Upper Receiver .300 Barrel EM-7 HG, No BCG/Charging Handle, FDE Cerakote, 10in, APAR600212M4 , MPN: APAR600212M4 , Code: 29D-UFH-APM4ECUPB10-APAR600212M4
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