** Testors Model Master 1723 Gunship Gray model paint. Federal Standard (FS) 36118. Model Master paints are available in a wide variety of historical and modern colors. Dries to a hard finish on a wide variety of surfaces. Can be applied straight from the bottle by brush or thinned with Testors Airbrush Thinner and applied by airbrush. 1/2 ounce glass bottle.