| 摘要 |
Embodiments included herein include a projectile system. At least one embodiment of the a projectile system includes hollow portion and a weight that is movably secured within the hollow portion of the projectile insert system. Some embodiments include an attracting device rigidly secured at a first end of the hollow portion, the attracting device removably securing the weight, where the hollow portion provides a pathway for the weight to travel when a force is exerted on the projectile insert system that causes the weight to become unsecured from the attracting device. |
