It can be used with either hand paint or spray paint. 'Stick on' or 'water transfer' 502'd decals were NEVER used during WW2!
The US Helmet Stencil 502d PIR 101st Airborne Heart Early WW2 M1 M2 M1C Decal USA is a great product for military history enthusiasts or reenactors looking to showcase their passion for World War II-era U.S. Army organization and equipment.