The Maxum elite gun is designed for contractors and finishing professions that need flawless results with the versatility to use gravity or siphon fed cup gun. The removable, and reversible, fluid chamber design enables use with standard pressurized cup and gravity cup. The fluid needle stays with packing and head assembly for color and tip size changes. There is an integrated check valve in gun head. This comes with the #3 Needle set. This part number is the gravity gun with overhead, 600ml cup and stand.