A dealer who receives a firearm, pistol, pistol carbine conversion kit, prohibited firearm, prohibited magazine, restricted airgun, blank-firing gun, restricted weapon, or major firearm part that does not bear an identification number must, within 30 days after the day on which it is received, stamp or engrave or cause to be stamped or engraved in clear view (which must be on the frame or receiver, or upper receiver and lower receiver, of the item if it is a firearm, restricted airgun, pistol, pistol carbine conversion kit, air pistol carbine conversion kit, or restricted weapon) a number by which the item may be identified.