ATOM paint Thinner and Cleaner with Retarder 400ml AMMO by MigATOM paint Thinner and Cleaner with Retarder 400ml AMMO by Mig 20521 MPN: AMIG 20521 ATOM 20521 Thinner is specially formulated for acrylic paints, and it includes retarder to slow down the drying time. Designed for ATOM paints from AMMO by Mig Jiminez, but can be used with other similar water based acrylic paints. Use this thinner to get the best results with the airbrush and to prevent clogging. It can also be used for brush painting. Ammo