Ruger

The non-expanding ARX is injection-molded from a specially blended copper/polymer matrix that is designed to be tough enough to penetrate soft targets and tissue, but when it encounters tougher barriers it is designed to break apart to reduce the risk for collateral damage due to over penetration. Even the heaviest clothing barriers have no effect on the terminal performance of the ARX bullet. The ARX penetrates straight until it encounters soft tissue. Upon entering soft tissue, the specially designed grooves in the nose harness the rotational energy of the bullet during the initial 6" of penetration. As the bullet penetrates it tumbles in a controlled, predictable fashion that delivers very consistent terminal performance that equals or exceeds conventional hollow point designs. In soft tissue, the ARX is designed to penetrate 12" to 14", every time.