Abstract: A snow making gun of the present invention includes a cylindrical housing carrying a motor and a fan which creates an air current into which water is injected from a ring water manifold via a plurality of nozzles having discharge orifices. An adjustable nucleating mechanism is associated with the manifold to optimize snow making under a variety of ambient conditions of pressure, humidity and temperature. Preferably, the water manifold or a portion thereof is removable so that nozzles having orifices of the first size can be replaced by an identical water manifold having nozzles whose orifices are of a different size. By utilizing quick connect/disconnect clamping elements a water manifold and its associated nucleating mechanism can be rapidly removed from and another applied to a cylindrical housing of an associated snow gun to assure that optimum artificial snow is made under any and all conditions.