My Account (Sign in)
Your basket is empty.
0
Basket
contact us by phone Help and contact
Free standard delivery over £199
100-day return policy
My Account (Sign in)
Wish list
Your basket is empty. (0)
Basket
Newsletter Newsletter
Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

Rifle Parts Receiver Parts Receivers Upper Receivers BROWNELLS AR-15 M4 STRIPPED UPPER RECEIVER BLACK Support

The Brownells M4 Stripped Upper Receiver offers a precision-machined 7075-T6 aluminum build, mil-spec compatibility, and a customizable design for your AR-15.

BROWNELLS AR-15 M4 STRIPPED UPPER RECEIVER BLACK

078000371

Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The Brownells M4 Stripped Upper Receiver is a high-quality, precision machined AR-15 component made from 7075 T6 aluminum, designed for custom builds.
  2. It features a matte black, Type III hardcoat anodized finish for durability and has mil-spec dimensions for compatibility with standard AR-15 parts.
  3. This stripped upper receiver comes without a forward assist or ejection port cover, allowing for full customization of the rifle.

Attributes

  • Cartridge: 
    5.56 mm NATO
  • Colour: 
    Black
  • Finish: 
    Anodized
  • Style: 
    Stripped
  • Weapon type: 
    AR-15
  • Delivery weight: 0.209kg

Item details

Made in USA
US export classification: I(g)
  • Specifications:
  • Cartridge: 5.56 mm NATO
  • Color: Black
  • Finish: Anodized
  • Make: AR-15
  • Style: Stripped
79.9 79.9 1 GBP
79.9 GBP £79.90

Prices inclusive of duty & VAT.

Product no.: 078000371

Sometimes you want the latest, updated, tweaked component, and sometimes you need a basic stripped receiver where the production effort goes into quality, rather than bells and whistles. The Brownells M4 Stripped Upper Receiver is that component - the perfect starting point for many an AR-15 build. Starting with a 7075 T6 aluminum forging, our stripped M4 flattop upper is precision machined to final dimensions that make it compatible with the multitude of available "mil-spec" AR-15 components. It has a matte black, Type III hardcoat anodized finish, mirroring the military requirement. Machined from 7075-T6 aluminum forging Matte black Type III hardcoat anodized finish Mil-spec dimensions for maximum parts compatibility Standard .250" dia. pivot/takedown pin holes Inside our upper features M4 feed ramps to aid in chambering during high rates of fire. Please note: this is a truly stripped upper receiver, with NO forward assist or ejection port cover installed, so you can truly customize every aspect of your rifle. The Brownells M4 Stripped Upper Receiver is a top-tier upper receiver, at a great price.
Not available
4.4/5 - 5 Customers

Not available.

100-Day Return Policy
No charges until we ship
No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.
Wish List Ask question
order by phone
79.9 79.9 1 GBP
Description Specification Customers reviews Accessories

BROWNELLS AR-15 M4 STRIPPED UPPER RECEIVER BLACK

79.9 GBP £79.90

Prices inclusive of duty & VAT.

Is a 'Call to order' product.
Requires order by phone

Description:

A Solid Foundation for Your Next Custom Build

Sometimes you want the latest, updated, tweaked component, and sometimes you need a basic stripped receiver where the production effort goes into quality, rather than bells and whistles. The Brownells M4 Stripped Upper Receiver is that component - the perfect starting point for many an AR-15 build.

Product Features:

  • Machined from 7075-T6 aluminum forging
  • Matte black Type III hardcoat anodized finish
  • Mil-spec dimensions for maximum parts compatibility
  • Standard .250" dia. pivot/takedown pin holes

Inside our upper features M4 feed ramps to aid in chambering during high rates of fire. Please note: this is a truly stripped upper receiver, with NO forward assist or ejection port cover installed, so you can truly customize every aspect of your rifle.

The Brownells M4 Stripped Upper Receiver is a top-tier upper receiver, at a great price.



Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The Brownells M4 Stripped Upper Receiver is a high-quality, precision machined AR-15 component made from 7075 T6 aluminum, designed for custom builds.
  2. It features a matte black, Type III hardcoat anodized finish for durability and has mil-spec dimensions for compatibility with standard AR-15 parts.
  3. This stripped upper receiver comes without a forward assist or ejection port cover, allowing for full customization of the rifle.

Attributes

  • Cartridge: 
    5.56 mm NATO
  • Colour: 
    Black
  • Finish: 
    Anodized
  • Style: 
    Stripped
  • Weapon type: 
    AR-15
  • Delivery weight: 0.209kg

Item details

Made in USA
US export classification: I(g)

Customers reviews

Customer ratings (5)

4.4 / 5
Recommended

Brownells USA Matches my Ruger lower perfectly 08/07/2018

I would have given it 5 stars if it wasn't for the fitment. 3.5 more like it. Has a good matte black color, does not scratch easily. But I had to sand down the rear kickdown block. I added pictures of what I mean. Also very tight tolorences on the buffer tube, if ANY threads stick out a bit it will not close. I had to back it out a bit, still enough to keep the pin in but I didn't like that either. Will use it for a bit and see how she works but will likely upgrade at a later date.







Recommended with reservations

Brownells USA Okay... Disappointed 26/06/2018

Receiver seems fine fit-wise but finish is lacking... 1/2 of the T markings are there, I wish they'd have missed them completely. They start bright near the barrel and get more faint until they disappear the closer you get to the Charging handle.... I don't care enough to hassle with sending it back but I do care enough to be disappointed in how silly it looks. I may buy another to replace this and use this one in a beater build.

Customers also bought

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Site Navigation
Product Categories
Ordering
Customer Service

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.

Brownells Norge - Komplett utvalg av ladeutstyr, våpendeler, kuler, hylser, kikkerter, optikk og luftvåpen Brownells Österreich - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Switzerland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Deutschland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells France - Le plus grand fournisseur d'Accessoires pour le tir, Pièces détachées & Outils d'Armurier Brownells Iberica - El mayor proveedor de accesorios para el Tiro, Piezas y herramientas del armero. Brownells Sverige - Världens största leverantör av Vapendelar, Vapensmide Verktyg & Skyttetillbehör Brownells Suomi Brownells Italia - Il negozio del più grande rivenditore di componenti e accessori per armi da tiro, difesa e caccia Brownells Polska - Największy na świecie dostawca części broni, narzędzi rusznikarskich & akcesoriów strzeleckich Brownells Česko - Největší světový dodavatel součástí zbraní, střeleckého příslušenství a zbrojního nářadí
*
Prices inclusive of duty & VAT.

© 2025 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top