- Mil-spec part
- Great for new builds or replacing worn parts
- Dependable parts at an incredible price
AR-STONER™ offers replacement components for the AR-15 that are made to strict military specifications. These high quality components provide excellent fit and reliable function in your AR series platforms. These AR-STONER™ parts are perfect for upgrading existing components or replacing worn or broken parts. Grab a few of the AR-STONER™ lower parts today!