A disassembled firearm is a weapon that has been completely dismantled. All pins, screws, wood, sights, plastic components, aluminum parts, springs, etc. have been removed from the firearm. Hexagonal or Octagonal barrels should be removed from the receiver. Round barrel removal usually isn't required unless the receiver or frame is made of an alloy. Identify and separate carbon steel parts, aluminum parts, stainless steel parts, and plastic parts. Note: All firearms must be disassembled prior to applying any metal finish.