Product Identifier 621220354: This item is particularly advised for usage with lead airgun pellets and lead shot only. It has been designed optimally for use with airguns possessing a muzzle velocity of less than 750fps. One of the features that makes the Gamo Rocker Pellet Trap standout is the ability to reset it without needing to move from your firing position. Upon hitting a round target, it will lock into an elevated position. Resetting the target involves hitting the large square center target. Upon doing this, all round targets are caused to fall and reset, making them ready for subsequent shooting activities.