MST has a series of manual injection guns to cover any application of our resin systems. From a standard caulking gun (1:1 ratio) for very low viscosity resins up to (26:1) ratios for high viscosity resins, joint fillers and mastics. Our (14:1 ratio) gun is excellent for our uni-cartridge resin systems. We also have a series of plural component guns for our dual cartridge resin systems and bulk guns for large volume product applications. Each gun is designed and manufactured to an ergonomic design for continued use without operator fatigue.