Receiver PartsAero PrecisionSold by Brownells

Aero Precision

Ar-15 Stripped Upper Receivers - Ar-15 Stripped Upper Receiver No Auto Sear/Forward Assist

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

Stripped Ar-15

Upper receiver for building from

Omit Auto

Sear cut for semi-automatic use

Available Without

Or without a forward assist

Accepts Standard

AR-15 or M16 bolt carriers

Machined M4

Feedramps

$124.99
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SKU: 100042567

Overview

Built as a starting point for an AR-15 assembly, this stripped upper receiver gives builders a clean foundation for a custom setup. It is configured without the auto sear cut, making it semi-automatic only, and is offered with or without a forward assist. Standard AR-15 and M16 bolt carriers are compatible, and the receiver includes M4 feedramps, a mil-spec Picatinny rail, and a matte black hard anodized finish. For hunters and shooters planning a from-scratch build, it offers the core upper component without extra features that may not be needed.

Why Hunters Choose the Aero Precision

Stripped Upper

Skeleton supports building an AR-15

Available Without

Or without the forward assist

Omit Auto

Sear cut for semi-automatic-only configuration

Compatible Standard

Standard AR-15 or M16 bolt

Includes M4

Feedramps and mil-spec Picatinny rails

Key Features

  • Stripped AR-15 upper receiver for building from scratch
  • Omit the auto sear cut for semi-automatic use only
  • Available with or without a forward assist
  • Accepts standard AR-15 or M16 bolt carriers
  • Machined with M4 feedramps
  • Features mil-spec Picatinny rails and matte black hard anodized finish

Best Used For

  • Builders starting an AR-15 project from scratch and needing a stripped upper receiver
  • Users wanting a semi-automatic-only upper without the auto sear cut
  • Shooters planning a rifle setup using standard AR-15 or M16 bolt carriers
  • Owners who prefer a mil-spec Picatinny rail and M4 feedramps
  • Buyers looking for a matte black hard anodized upper receiver finish

Specifications

Auto Sear CutNo
Blade Finishmatte black hard anodized finish
CompatibilityStandard AR-15 components, including AR-15 or M16 bolt carriers
FeedrampsM4 feedramps
Forward AssistNo
Rail Typemil-spec picatinny rails
Semi Automatic OnlyYes

Pros

  • Stripped upper skeleton supports building an AR-15 from scratch
  • Available with or without the forward assist
  • Omit the auto sear cut for semi-automatic-only configuration
  • Compatible with standard AR-15 or M16 bolt carriers
  • Includes M4 feedramps and mil-spec Picatinny rails
  • Finished in matte black hard anodized coating

Considerations & Trade-offs

  • This is a stripped upper receiver, so it is intended as a starting point rather than a complete upper assembly.
  • The receiver omits the auto sear cut, which limits it to semi-automatic use and may not suit builds intended for other configurations.
  • It is offered with or without a forward assist, so buyers need to choose the version that matches their build plan.
  • Standard AR-15 or M16 bolt carriers are listed as compatible, but other upper components are not included and must be sourced separately.

Suggested Comparisons

  • AR-15 upper receiver components
  • Stripped upper receivers
  • AR-15 build parts
  • Semi-automatic AR-15 receiver components

Suggested Accessories

  • Upper receiver parts kit
  • Bolt carrier group
  • Charging handle
  • Optics mount

Frequently Asked Questions

Is this a complete upper receiver or a stripped receiver for a build?

This is a stripped AR-15 upper receiver intended as a starting point for a build, not a complete upper.

Does this upper include a forward assist?

The product is listed as a "No Auto Sear/Forward Assist" upper receiver, and the description also notes that uppers are available with or without the forward assist. Based on the title, this version is the no-forward-assist option.

Will standard AR-15 or M16 bolt carriers work with this receiver?

Yes. The description states that standard AR-15 components, including AR-15 or M16 bolt carriers, will function with these upper receivers.

What features are built into the receiver?

The listed features are M4 feedramps, mil-spec Picatinny rails, and a matte black hard anodized finish.

Is this receiver intended for semi-automatic use only?

Yes. The description says these upper receivers omit the "auto sear" cut, making them semi-automatic only.