The RC is Marcus Napuri's version of the Republic Commando helmet. This design combines the video game art and the cover art from the books, a composite using the best of both. Like all NME helmets the RC helmet comes as an unpainted kit (some assembly required)
Raw Cast is a casting that pull straight from the mold with no clean up and sold as is.
Hero Cast is a casting that has been inspected, bottom cut out, cleaned up, and ready to be primer or paint.