To be honest I did not think this product would perform the way it did. Really awsome product, despite simple design an low cost materials.However this proves the fact that things dont have to be over- engeneered to work.I now have 4 units, and this makes colorchanges easier. If youhave to change from black to white you have to make sure the gun is ABSOLUTELY clean. One black fragment in the white finish....You do the math.. I have one gun for white,one for clear, and to for all others. -Easy(and looks cool...) I also purchased a lot of bottles so I dont have to empty one to cange colors. Cheap and time saving. I would also recomend 2 steps to better the performance of this gun: 1: I glued the activator switch to the left side of the gun handle. This makes it possible to use the thumb to activate the power. Left hand is then free .
2: I put a thin rubber gasket inside the lid attached to the gun. This makes a good seal, -without it the gun can leak powder through the bottle threads. Summary: I love it!!!