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Aero Precision

Ar-15 Assembled Upper Receiver 5.56mm - 5.56 Nato Assembld Upper Rcvr No Forward Assist For Ar15 Blk

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

Ar15 Assembled

Upper receiver for 5.56 NATO

Port Door

Is already installed

No Forward

Assist provisions

Forged From

7075-T6 aluminum

Precision Machined

To mil-spec M16/M4 specifications

$96.99
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SKU: 100054331

Overview

Built for an AR-15 setup, this assembled upper receiver provides a ready-to-use foundation for a rifle build or replacement project. It arrives with the port door already installed and is configured without forward assist provisions, making it suited to builders who want that specific layout. The receiver is forged from 7075-T6 aluminum and precision machined to mil-spec M16/M4 specifications, with M4 feedramps, .250 takedown pin holes, and laser-engraved T-marks. Finished in anodized black, it is intended to pair with an AR15 lower receiver for a solid, dependable fit.

Why Hunters Choose the Aero Precision

Port Door

Is already installed for a

Forged From

7075-T6 aluminum for a durable

Precision Machined

To mil-spec M16/M4 specifications

Includes M4

Feedramps for compatibility with supported

.250 Takedown

Pin holes and laser-engraved T-marks

Key Features

  • AR15 assembled upper receiver for 5.56 NATO / 5.56mm builds
  • Port door is already installed
  • No forward assist provisions
  • Forged from 7075-T6 aluminum
  • Precision machined to mil-spec M16/M4 specifications
  • Includes M4 feedramps and .250 takedown pin holes
  • Lazer engraved T-marks and anodized black finish

Best Used For

  • AR-15 builders seeking an assembled upper receiver with the port door already installed
  • Users planning a no-forward-assist setup for a mil-spec M16/M4-style build
  • Shooters wanting an upper with M4 feedramps and .250 takedown pin holes
  • Builders matching an anodized black upper to compatible AR15 lower receivers

Specifications

Blade FinishAnodized black
Caliber5.56mm / 5.56 NATO
CompatibilityAR15 lower receivers
FeedrampsM4 feedramps
ForgingCustom forging designed to work specifically with mil-spec port
Forward AssistNo forward assist provisions
Material7075-T6 aluminum
Port DoorInstalled
SpecificationsPrecision machined to mil-spec M16/M4 specifications
T MarksLazer engraved
Takedown Pin Holes.250

Pros

  • Port door is already installed for a more complete upper receiver assembly.
  • Forged from 7075-T6 aluminum for a durable receiver foundation.
  • Precision machined to mil-spec M16/M4 specifications.
  • Includes M4 feedramps for compatibility with supported setups.
  • Features .250 takedown pin holes and laser-engraved T-marks.
  • No forward assist provisions for a streamlined upper receiver design.

Considerations & Trade-offs

  • This upper receiver is configured without forward assist provisions, so it is intended for builds that do not require that feature.
  • The port door is already installed, which simplifies setup but leaves less room for customization at the receiver level.
  • It is machined to mil-spec M16/M4 specifications, so fit is meant to be straightforward with compatible AR15 lower receivers, but compatibility still depends on the rest of the build.
  • The custom forging is designed to work specifically with mil-spec port dimensions, so it is a more specialized choice than a fully universal upper receiver design.

Suggested Comparisons

  • AR-15 stripped upper receiver
  • AR-15 complete upper assembly
  • AR-15 lower receiver
  • AR-15 upper receiver with forward assist

Suggested Accessories

  • AR-15 lower receiver
  • AR-15 handguard
  • AR-15 charging handle
  • AR-15 magazine

Frequently Asked Questions

Does this upper receiver include the port door or do I need to install one separately?

The port door is already installed.

Does this upper receiver have forward assist provisions?

No. This model does not have forward assist provisions.

What material is the upper receiver made from?

It is forged from 7075-T6 aluminum.

What specifications does this upper follow?

It is precision machined to mil-spec M16/M4 specifications and features M4 feedramps.

Will this upper fit with an AR15 lower receiver?

The product description says to match it with one of the AR15 lower receivers for a solid and dependable fit, but exact compatibility should still be verified for your specific build.