Filling the BBs is rather simple align your BB speed loader (or tube and rod if you’re old school), plug away till you meet resistance then repeat on the opposite side. The first few times you load may be difficult but once you find the angle that works things will be easy. Once the BBs are loaded, screw the bottom cap on and the AI Tornado is armed and ready to go. BBs are held in the grenade via clips at the entrance. If you forget the fill process, it is printed on the back of the grenade, along with the warnings and disclaimers. When armed with 180 BBs the Tornado does rattle ever so sligh