Radian Raptor Ambidextrous Charging Handle Gun Fit:AR 15 M16 X shaped thermal plastic urethane (TPU) X shaped thermal plastic urethane (TPU) shell EVA high density foam for superior shock absorption Lightweight TPU and Cordura nylon construction Forceful spring back action that gives you the protection you need Cool Max inner surface for wicking moisture away Anti skid inner surface to keep pad secured Spandex adjustable straps with hook & loop closure for secure fit The XTAK Elbow Pads are extremely lightweight and provide superior protection and shock absorption Cleaver style blade for top cutting performance From rapid palm ''blading'' or finger thumb charges of the weapon the motion is fluid & fast from either strong or support side