The Shell component is added to an object which will fly out of a weapon to help indicate that a bullet has been fired. Because the shell is so small Unity’s physics engine doesn’t work too well with it so the shell’s Rigidbody will be set to kinematic after it has landed on the floor. The shell will stay on the floor for the Lifespan duration and then placed back in the ObjectPool.
The length of time that the shell should exist for
<- Rideable Object