Builder Sets

At Patriot Arms and Supply, we provide AR lower receivers in both assembled and stripped options.

The AR lower receiver serves as the foundation for your AR rifle, accommodating the trigger group, magazine well, and lower parts kit. It's also the component that offers the most customization possibilities, allowing for various accessories and upgrades like ambidextrous controls, pistol grips, and collapsible stocks.

Our inventory includes reputable brands such as Aero Precision, Anderson Rifles, Matrix Arms, Rock River Arms, and Spikes Tactical.