Receiver PartsAero PrecisionSold by Brownells

Aero Precision

M4e1 Stripped Uppper Receiver Threaded 5.56mm Fde - M4e1 5.56mm Nato Stripped Upper Threaded For Ar-15 Black

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

Threaded Upper

Receiver accepts a standard AR15

Forged From

7075-T6 aluminum

Precision Machined

Mil-spec AR15 parts

Angular Machined

Design distinguishes it from standard

Enhanced Body

Profile matches the M4E1 Enhanced

$110.99
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SKU: 100026237

Overview

This upper receiver is built for shooters assembling an AR-15 platform with a clean, enhanced profile and compatibility with standard mil-spec parts. Its threaded design accepts a standard AR15 barrel nut, making it a practical choice for a custom build or receiver set that follows familiar component standards. The angular machined styling gives it a more refined appearance than a standard mil-spec upper, while still staying focused on function. It is a solid option for hunters and rifle owners who want an upper receiver that pairs well with an M4E1 lower and supports a streamlined build process.

Why Hunters Choose the Aero Precision

Angular Machined

Design distinguishes it from standard

Threaded Accept

Standard AR15 barrel nut

Forged From

7075-T6 aluminum for a durable

Precision Machined

All mil-spec AR15 parts

Enhanced Body

Profile matches the M4E1 Enhanced

Key Features

  • Threaded upper receiver accepts a standard AR15 barrel nut.
  • Forged from 7075-T6 aluminum.
  • Precision machined to work with mil-spec AR15 parts.
  • Angular machined design distinguishes it from standard mil-spec upper receivers.
  • Enhanced body profile matches the M4E1 Enhanced Upper Receiver.
  • Designed to pair with the M4E1 Lower Receiver for a billet-like receiver set.

Best Used For

  • AR-15 builders wanting a threaded upper that accepts a standard barrel nut
  • Shooters seeking an enhanced-profile upper with a billet-style appearance
  • Users assembling a receiver set around the M4E1 Lower Receiver
  • Builders needing compatibility with mil-spec AR-15 parts

Specifications

Blade FinishFDE
Caliber5.56mm NATO
ColorBlack
CompatibilityAll mil-spec AR15 parts
Compatible Barrel NutStandard AR15 barrel nut
Designed To Pair WithM4E1 Lower Receiver
Enhanced Body ProfileYes
ForgedYes
Material7075-T6 Aluminum
Picatinny ProfileNew picatinny profile
Product TypeUpper Receiver
ThreadedYes

Pros

  • Angular machined design distinguishes it from standard mil-spec upper receivers.
  • Threaded to accept a standard AR15 barrel nut.
  • Forged from 7075-T6 aluminum for a durable receiver foundation.
  • Precision machined to work with all mil-spec AR15 parts.
  • Enhanced body profile matches the M4E1 Enhanced Upper Receiver.
  • Designed to pair with the M4E1 Lower Receiver for a coordinated set.

Considerations & Trade-offs

  • Threaded to accept a standard AR15 barrel nut, so it is not a drop-in choice for builds that require a different upper interface.
  • The stripped configuration means additional upper components are still needed before the receiver is ready for use.
  • Its enhanced, angular profile is a design choice that may not suit buyers looking for a standard mil-spec appearance.
  • The product is described as pairing with the M4E1 Lower Receiver, but it is still presented as compatible with all mil-spec AR15 parts rather than a complete matched set.

Suggested Comparisons

  • AR-15 upper receivers
  • AR-15 receiver sets
  • AR-15 build components
  • Aero Precision M4E1 lower receivers

Suggested Accessories

  • AR-15 barrel nut
  • AR-15 lower receiver
  • Picatinny rail accessories
  • AR-15 assembly tools

Frequently Asked Questions

Is this a complete upper receiver or a stripped upper receiver only?

This is a stripped upper receiver. The product title and description identify it as an M4E1 Threaded Upper Receiver, not a complete upper assembly.

What barrel nut does this upper accept?

It is threaded to accept a standard AR15 barrel nut.

Will this upper work with mil-spec AR15 parts?

Yes. The description says it is precision machined to work with all mil-spec AR15 parts.

What material is the upper receiver made from?

The source data states it is forged from 7075-T6 aluminum.

Is this intended to match the M4E1 lower receiver?

Yes. The description says it is designed to pair with the M4E1 Lower Receiver for a billet-looking receiver set.