Tee vortex BBMG

This specifically shaped object made of a semi-hard to hard material is used in a BB machine gun to take bb's located outside of this part and suck them into the barrel of the BB machine gun. Some people use lathes in order to turn pieces of aluminum for the construction of a vortex, while others prefer using Bondo Auto Body Filler molded in a PVC plug. Designs for building a Bondo vortex can be found on Burnt Latke's BB machine gun construction page.