Compliance is the most critical factor in this category. For the US market, products must have a permanent blaze orange tip (minimum 6mm) as per CFR Title 15 Part 1150. For the EU, products must adhere to CE Marking, EN71 (Toy Safety) if applicable, and RoHS for electronic components. In the UK, compliance with the VCRA (Violent Crime Reduction Act) is mandatory, often requiring 'two-tone' coloring unless the buyer has a specific defense. Always verify that the Joules/FPS levels do not exceed the legal limit of the destination country to avoid seizure by customs.