This is what you need to do. The ebay system for this is a combination of automated scans that flag listings for manual review as well as user reported listing violations. As soon as you have something demonstrating the scale of the item it avoids this issue in the first place the majority of the time and makes it easy to resolve with a quick call to remove the listing violation score off your account. Adding words like toy or a scale notation to the description/title is not sufficient, but recommended in conjunction. The item specifics fields also include a scale option, so fill that in as well. The combination of these things will also help to avoid people trying to buy an item assuming its a life size toy (why any parent with a brain would buy a realistic looking "toy' weapon for a child these days is beyond me...) or airsoft item.