Do all guns need an orange-tipped barrel?

Orange tips and tape are for CA compliance in most places, but you can play on the field without this, and barrel covers are for when you are not playing, usually it's a bag with an elastic cord that you remove when you play.

No orange tip need but like MRFLUFFY 77 said when in battle need a cover for the barrel. They has some you can use. Good luck on mission to seek and destroy.

Anything that will securely cover the barrel when you arent playing