This is a fully functional, Custom painted airsoft gun
The gun is based off the Tokyo Mauri FAMAS.
The gun gets disassembled and cleaned. Some Parts get painted maroon, others candy apple red. Then a skull hydrographic is applied to the body of the gun. After that, a durable coat of Cerakote clear is applied to protect the gun.
The resulting finish should be fine to endure whatever small battle damage your gun endures during airsoft skirmishes.