The Yankee Hill Machine AR-15 lower receiver assembly with carbine stock is a fully assembled, ready-to-run foundation for your custom build or a home for that spare upper you've got lying around. YHM machines these lowers entirely in-house from 7075-T6 aircraft-grade aluminum, so you're getting quality control and durability that cuts through the noise of import commodity parts. The whole package arrives assembled and configured—bolt it to your upper, load a mag, and you're shooting.
What sets this lower apart starts with the engineering: oversized magazine well chamfers make mag changes faster and smoother, and it accepts all generations of PMAG magazines plus any mil-spec upper receiver. The lower ships with a complete lower parts kit already installed, including a standard A2 pistol grip and a 6-position adjustable commercial carbine stock, so there's no additional assembly or parts hunting needed before you hit the range.
The finish is hardcoat anodized matte black to military spec or better, meaning it'll handle hard use and hold up to corrosion. Whether you're building your first AR, adding to a collection, or just need a spare lower to keep a parts upper functional, this is a solid foundation built with attention to detail and machine quality you can trust.
| Material | 7075-T6 aircraft-grade aluminum (forged) |
| Finish | Hardcoat anodized matte black |
| Carbine Stock | 6-position adjustable commercial |
| Pistol Grip | Standard A2 black |
| Magazine Compatibility | All generations PMAG, mil-spec magazines |
| Upper Receiver Compatibility | Mil-spec AR-15 uppers |
| Condition | Fully assembled, ready to use |
This lower accepts all mil-spec AR-15 upper receivers, so it's compatible with uppers from pretty much any mainstream manufacturer.
Yes. The lower ships with a complete lower parts kit already installed, an adjustable 6-position carbine stock, and a standard A2 pistol grip. You just need to attach your upper receiver and go.
It accepts all generations of PMAG magazines as well as standard mil-spec magazines, giving you flexibility in your ammunition feeding options.
7075-T6 is an aircraft-grade aluminum alloy known for exceptional strength and durability. YHM machines these lowers in-house, so you're getting quality control and precision manufacturing, not mass-produced commodity parts.
Firearm Shipments:
To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.
We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.
We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.
Email: [email protected]
Yankee Hill Machine
Yankee Hill Machine
Yankee Hill Machine
