Thanks for the explanation. At a quick look online, it looks like the law's a bit vague in the UK. Toy guns have to be at least 50% brightly coloured, unless they're airsoft guns...weird. At least my railgun is clearly an SF gun with an unusual colour scheme (Arclight). Bit worried about the Fortnite cosplay SMG I just made my son now though, it's fairly realistic. The next comic con here says an orange tip is fine. Looks like no one can really make up their minds....