Willow Defense Forged Stripped AR-15 Upper Receiver - T Marked

Manufactured by Willow Defense
Manufactured by Willow Defense
39 Reviews

In Stock

Due to the overwhelming response to our Black Friday and Cyber Monday sales, we are working hard to catch up! New orders of non-FFL items will ship within 2 business days (M-F), and FFL orders will ship within 8 business days if transfer details are provided.

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For the budget-builder seeking to put together a dependable and lightweight AR15, a Willow Defense Stripped Lightweight upper receiver must be on your list of parts to include in the build. The Willow Defense stripped receiver is forged from aerospace-grade 7075-T6 aluminum and though lightweight, is as rugged and durable as they come.

  • Material: Forged 7075-T6 Aluminum 
  • Upper: Stripped
  • Finish: Black
  • Feed Ramps: M4
  • Rail: T Marked
  • Compatibility: Mil-Spec Components

This upper receiver from Willow Defense is compatible with any of the Mil-Spec components you'll need to add during your build and includes a T marked top rail that allows perfect positioning of your accessories when changing configurations and reattaching the devices. 

As any AR15 budget-builder will tell you, it's all about options when starting the build, and that's the main reason this stripped receiver from Willow Defense is so popular. Priced reasonably to fit even the tightest budget, this stripped receiver from Willow Defense allows you to customize your AR15 to suit your personal liking and shooting style. With a Willow Defense stripped upper receiver, you can start your build off right and save a few dollars for other enhancements or modifications you intend to make.
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BrandWillow Defense
Feed RampsM4
FinishHardcoat Anodized
Forward AssistAccepts Standard Forward Assist
Port DoorAccepts Standard Port Cover
Receiver Material7075-T6 Aluminum
T MarksT-Marked
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

39 reviews


Good to go!

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I was happily surprised when I received this upper. It is well made to milspec standards, and the finish is tops. Don't hesitate to purchase. It will work with any standard lower and any Handguard. Speaking of Handguard by Willow Defense, get it as well, you will not be disappointed. Than you Primary Arms for lightning shipping!

Great service great product

by -

Primary Arms offers very good products and the order / delivery service is exceptional.

great quality

by -

These things are nice. all the pins fit exactly, the charging handle fits great and slides the BCG back with no scraping on the walls of the receiver. Yes this is cheaper, But, Its BETTER.


by -

Found the whole that was drilled for the pin for the Forward assist was undersized.

Average, but good enough for the price.


The finish is on a little thick and two different dust covers fit a little tighter than I'd like, but otherwise seems ok.
I usually use Aero/BA or Anderson uppers, gave this one a try, I'll keep it for a budget build.

What you expect.


It is rough on the edges, the finish is soft, and it is slightly out of spec (charging handle channel scratches all my handles and slows them). The rest of it seems in spec.

Awesome Upper

by -

These are one of the best buys I've had in a while..T marking is just icing on the cake.

Very nice!


Picked one up on sale just to see if it was as good as the other reviews. It was better than expected!!! The finish was perfect and the barrel fit nice and tight. I will be buying more of these.

Good enough

by -

Works great , see no problems with the product.

Great buy


Bought because of the sale price but was pleasantly surprised with what arrived. This will be my 10th build and have used 10 different uppers; this is as good as any I've used except a BCM. Buy with confidence and buy an extra so you don't kick yourself later!