AMMO by MIG U-RUST BLACK OXIDEAMMO by MIG U RUST BLACK OXIDE Volume: 40ml From the Manufacturer: AMMO's new U RUST range is a new formula designed to create rust effects on your models. It is not regular paint that simulates a rust finish, but an actual oxidation process, and it would be very difficult to get a better result than easily achieved with U RUST. AMMO has managed to adapt an ordinary chemical reaction to our scale models. Product formulated to create real black oxide.