The Ruger AR-15 Complete Lower Receiver Model 28501 is factory assembled and ready to pair with a compatible Mil-Spec AR-15 upper receiver. Built on a forged 7075-T6 aluminum receiver with a Type III hard coat anodized finish, it provides the durability and precision Ruger is known for.
This complete lower comes equipped with Ruger’s Elite 452 two-stage trigger for a crisp, consistent trigger pull. A Magpul MOE SL adjustable stock and Magpul MOE grip provide excellent ergonomics, while the Mil-Spec receiver extension, buffer, and buffer spring are factory installed for a ready-to-build package.
Whether you’re completing a new rifle or upgrading an existing project, the Ruger AR-15 Complete Lower Receiver offers a dependable foundation backed by Ruger’s quality manufacturing. Designed to accept standard Mil-Spec AR-15 upper receivers, it delivers reliable performance for recreational shooting, competition, or defensive use.
Key Features
- Complete factory assembled lower receiver
- Forged 7075-T6 aluminum receiver
- Ruger Elite 452 two-stage trigger
- Magpul MOE SL adjustable stock
- Magpul MOE grip
- Mil-Spec carbine receiver extension
- Factory-installed buffer and buffer spring
- Type III hard coat anodized finish
- Compatible with standard Mil-Spec AR-15 upper receivers
- Made in the USA
Manufacturer Specifications
Model Number: 28501
Platform: AR-15
Configuration: Complete Lower Receiver
Receiver Material: Forged 7075-T6 Aluminum
Finish: Type III Hard Coat Anodized
Trigger: Ruger Elite 452 Two-Stage
Stock: Magpul MOE SL Adjustable
Grip: Magpul MOE
Receiver Extension: Mil-Spec Carbine
Includes: Buffer and Buffer Spring
Compatibility: Standard Mil-Spec AR-15 Upper Receivers
Manufacturer: Sturm, Ruger & Co.
Country of Origin: USA
FAQ
Is this a complete lower receiver?
Yes. It comes factory assembled with the trigger, stock, grip, receiver extension, buffer, and lower components installed.
What trigger does it include?
It includes the Ruger Elite 452 two-stage trigger.
Will it fit a standard AR-15 upper receiver?
Yes. It is compatible with standard Mil-Spec AR-15 upper receivers.
Does it include the buffer assembly?
Yes. The receiver extension, carbine buffer, and buffer spring are factory installed.
Is this made in the USA?
Yes. It is manufactured by Sturm, Ruger & Co. in the USA.
Brought to you by Black Bayou Armory.






Reviews
There are no reviews yet.