You can a apply two base coats of epoxy straight on the gun (not over any type of oil) sand down to 400 grit then spray paint the camo with acrylic paint.
I would then top coat with acrylic clear lacquer.
You should be able to buy aerosol tins of acrylic from a car body repair shop or DIY store.
You could try painting two pack over the acrylic spay but I am not sure how well it will adhere?
Acrylic sets touch dry in seconds & eventually goes very hard (as used on cars but normally baked on in an oven) but will take a few weeks to get there at room temp.
I would then top coat with acrylic clear lacquer.
You should be able to buy aerosol tins of acrylic from a car body repair shop or DIY store.
You could try painting two pack over the acrylic spay but I am not sure how well it will adhere?
Acrylic sets touch dry in seconds & eventually goes very hard (as used on cars but normally baked on in an oven) but will take a few weeks to get there at room temp.