Duracoat Reducer is specially formulated for Duracoat. This proprietary beled of solvents is a must for a successful firearms finishing project. The use of other solvents will dramatically change the chemical balance of Duracoat and may cause finish failure. Duracoat may be reduced up to 20 Percent for proper atomization which allows for a smooth even flow. Duracoat Reducer must also be used to clean your spray gun and keep it running smoothly.. Type - Reducer. Item Weight - 32 oz.