RUMARK slingshot"s clear, plastic handle slides up, and down the U-shaped aluminum frame * When pushed up, the chamber releases SA30 ammo fromthe handle"s bottom. When pushed down, the chamber becomes "self-sealing" and traps the ammunition * The fast, tapered powerbands are designed to release maximum energy with minimum hand strain while aiming * The S9T is excellent when faster ammo velocity and accuracy are necessary to increase bull"s-eye scores with a 225 yd. Range * This item is not for sale in some specific zip codes