4C's Spray Equipment has the only patented air purge dispensing gun in the roofing industry for spatter/splatter application. This method of application saves the contractor time and money on material and labor. Its ease of use and minimal maintenance add to the savings. The HULK® is the best and easiest heated or unheated portable spray machine for low rise adhesive to operate. When purchased you receive the patented gun and a day of training at no charge! Our ongoing customer support is unmatched!