Fusion FX Polyurea Gun with Round Mix Chamber Sizes 0.029, 0.034, & 0.037Introducing the Fusion FX, the industry's smallest, lightest, best balanced gun ever built. Featuring all new spray technology that will change the way you spray. Gracos new Fusion FX gun is designed from the ground up. Every feature thought out to make it the easiest to maintain and most comfortable gun on the market. Built for spray foam and polyurea applications. Smallest, Lightest, & Most Balanced Gun On The Market 30% lighter compared to Fusion