Receiver PartsAtiSold by Brownells

Ati

Ar-15 M4 Stripped Upper Receiver

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

Forged From

T7075 aluminum for a stripped

Includes M4-type

Feed cuts inside the receiver

T-marks Picatinny

Rail

Black Finish

Clean, ready-to-build appearance

Stripped Design

Lets you complete your AR

$43.95
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SKU: 100020951

Overview

Built for shooters assembling an AR platform to their own specifications, this stripped upper receiver provides a solid starting point for a custom build. It is forged from T7075 aluminum, finished in black, and includes M4-type feed cuts along with T-marks on the picatinny rail. Because it is sold stripped, it leaves component selection in your hands while remaining compatible with standard mil-spec AR lower receivers and components.

Why Hunters Choose the Ati

Forged T7075

Aluminum construction for a durable

M4-type Feed

Cuts are included inside the

T-marks Picatinny

Rail support consistent optic placement

Stripped Design

Your preferred components

Compatible Standard

Standard mil-spec AR lower receivers

Key Features

  • Forged from T7075 aluminum for a stripped AR-15 M4 upper receiver.
  • Includes M4-type feed cuts inside the receiver.
  • Features T-marks on the Picatinny rail.
  • Black finish provides a clean, ready-to-build appearance.
  • Stripped design lets you complete your AR build with chosen components.
  • Compatible with standard mil-spec AR lower receivers and components.

Best Used For

  • Hunters building a custom AR platform from mil-spec compatible components
  • Shooters wanting a stripped upper for a personalized rifle setup
  • Users who prefer starting with a black-finished receiver and adding parts themselves
  • Builders looking for an upper with T-marks on the picatinny rail for setup reference

Specifications

Blade FinishBlack
CompatibilityStandard mil-spec AR lower receivers and components
ConfigurationStripped
Feed CutsM4-type feed cuts
MaterialT7075 aluminum
RailPicatinny rail
Rail MarkingsT-marks

Pros

  • Forged T7075 aluminum construction for a durable receiver foundation
  • M4-type feed cuts are included inside the receiver
  • T-marks on the Picatinny rail support consistent optic placement
  • Stripped design lets you complete the build with your preferred components
  • Compatible with standard mil-spec AR lower receivers and components
  • Black finish provides a clean, ready-to-build appearance

Considerations & Trade-offs

  • This is a stripped upper receiver, so it requires additional components before it can be used in a complete build.
  • Compatibility is described for standard mil-spec AR lower receivers and components, so fit should be verified against the rest of your parts list.
  • The black finish and T-marks provide a functional base, but the part is intentionally minimal rather than fully assembled.
  • M4-type feed cuts are included, but no other performance details are provided in the product data.

Suggested Comparisons

  • Complete AR-15 upper receiver assemblies
  • AR-15 lower receivers
  • AR-15 upper receiver parts and components
  • AR-15 build kits

Suggested Accessories

  • AR-15 handguard
  • AR-15 barrel
  • AR-15 bolt carrier group
  • AR-15 charging handle

Frequently Asked Questions

What is included with this upper receiver?

It is a stripped upper receiver, so it is sold without the additional components needed to complete the build.

Is this upper compatible with standard AR parts?

Yes. The product data states it is compatible with standard mil-spec AR lower receivers and components.

What material is the receiver made from?

The receiver is forged from T7075 aluminum.

Does it have M4 feed cuts?

Yes. The description states it features M4-type feed cuts inside.

What finish and rail markings does it have?

It is black finished and includes T-marks on the picatinny rail.