Introducing patent-pending Ruger ARX Ammunition. Precision-engineered with advanced materials in the development laboratory of PolyCase Ammunition, ARX ammo achieves extreme performance in a cutting-edge design. Ruger ARX Ammunition is on-target to revolutionize the self-defense ammunition industry. Revolutionary Design - The ARX bullet is a revolutionary step forward in self defense. High Speed, Yet Low Recoil - For maximum force to target and fast, repeated target acquisition. Advanced Materials - Copper-polymer matrix performs in a wide range of firearms, including suppressed weapons. ARX Technology Acts as a force multiplier, dispersing energy forward and laterally. ARX bullets are engineered for maximum hydraulic displacement and terminal energy transfer to targets.