Does what it says on the tin, pretty much. Adds four i mean five new skins for kden's RSASS, being an overkill safe rip, two shitty original creations, one actually decent original creation, and an obligatory girls' frontline skin, to the game for you to use.
It's a good gun and you should check it out, even if only because you like these skins.
kden's (excellent) RSASS and all of its dependencies are REQUIRED.