I've used Rust-Olem paint for years on everything from metal lawn furniture, birdhouses, and models. Last year I tried the Rust-Oleum flat gray primer on a mode! and it worked out great. The paint goes on smooth and levels out nicely. I recently sprayed a model truck with Rusty Oleum flat white primer and cleared it with Tamiya pearl clear. The paint job turned out great. I'll be trying the flat red primer and clearing it with Rust-Oleum clear lacquer this Spring.