I want to put dust covers on my various AR's that are marked .223 or 300BO. I've been looking for them at gun shows but so far I've only found one. I bought it. I'm looking for a site that has some good looking gear to show at a glance that the gun is a .223 or .300. I don't want to do tape or marking pen. If you can direct me to a site I'd thank you.