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YHM has long been a manufacturer of quality AR-15 Upper Receivers and is very proud to offer our A3 Upper Receivers. These uppers were designed, and are MACHINED 100% IN HOUSE and are forged from 7075-T6 aluminum. Fit and function with your standard lower receiver.

  • Weight: 8.384 Oz.
  • Made from 7075-T6 aluminum (Forged)
  • M4 Style feed ramps and "T" Markings
  • Inside coated with dry film lube
  • Accepts Standard upper receiver parts (dust covers, forward assists, etc.)
  • Accepts Mil-Spec Lower receivers
  • Hardcoat Anodized matte black to Military Specifications or better
  • Forward assist
  • Dust cover assembly

3 Reviews Hide Reviews Show Reviews

  • 5
    Great Workmanship

    Posted by Ed Dyer on Jun 20th 2023

    Fantastic overall quality. I'll be buying more YHM products.

  • 5
    A3 upper receiver

    Posted by David Ledger on Mar 6th 2023

    Awesome YHM quality and finish. Great price everything is as expected.

  • 5
    Nice upper!

    Posted by Alex Quinn on Jul 14th 2021

    Great fit, great quality, so easy to install. Would buy again for my next build.

Yankee Hill Machine Co., Inc. does not offer for sale any controlled product (serialized parts) directly to the end user. This includes Complete YHM-15s, Sound Suppressors, and Lower Receivers. Follow these steps when purchasing to ensure that you receive your order as quickly as possible.

1. Visit (or call) your local firearms dealer and tell them exactly what model number you are looking for (If ordering a sound suppressor keep in mind the dealer needs to be a Class 3 dealer). If your dealer of choice does not currently a offer YHM products don't worry. They can easily become a YHM dealer.

2. IMPORTANT NOTE: EVEN IF A PRODUCT IS OUT OF STOCK ONLINE, DEALERS CAN BACK ORDER THE ITEM AT ANY TIME. Placing your order through a dealer gets you on the back order list and ensures that you will receive your product in the fastest manner possible. This can be applied to any item you are looking for on the website.

Once the order is placed, as soon as the product is ready to go out the door the dealer will be notified and the product will be on its way.

3. Once the dealer receives your order they should contact you to come and pick it up.

Manufacturers Disclaimer:
You, the purchaser are responsible to know your local, regional, state and federal firearms regulations regarding assault rifles and NFA weapons (Such as sound suppressors and short barreled rifles) when purchasing our products. Some of our products in this catalog require a Federal Firearms License and/or S.O.T for purchase.

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