Abstract: A toy gun for repeatedly firing stretched rubber bands from projections upon removable rotating hollow cylinders. All mechanisms are themselves powered by rubber bands. While unattached to the gun, cylinders are wound up by separating a front locking pin and turning front and body in opposite directions, thus winding the rubber band affixed inside. Inserting the cylinder onto the gun frame forces the cylinder to contact a projection which again separates the front locking pin from the cylinder body. The cylinder has on its exterior raised lengthwise projections, called "slats". Each slat but one has near the rearward end of the gun a notch. A cylinder is loaded by stretching a rubber band over each notched slat. Aligned with slat notches is a holding pin affixed to the gun. The holding pin contact either a rubber band or the unnotched slat, preventing unwanted cylinder rotation. Pulling the trigger engages a `slip hammer` that pushes the rearward part of the rubber band above the slat.