Endless fun and confusion! As a bit of a guide, this is what you would need if you want to couple a compressor with 1/4 male thread to a spray gun using quick release fittings. Mount a snap female body onto the compressor, put a snap male adapter into one end of the hose. The hose will now snap onto the compressor. Put a snap male body onto the other end of the hose and a snap female adapter onto the gun. The gun will now snap onto the hose. Easy peesy! To simplify things just order the top four listed below.