One of may favorite movie is Machine Girl where a girl loses her arm only to be replaced with a machine gun.
And these crazy people have come up with a parody of Machine girl =.=
Noriko Kijima, a gravure idol (a bikini model that is fetishized as only the Japanese can do) is set to get the gun arm and the gun ass.
But I don't mind the Noriko Kijima part. Stop drooling on the keyboard ok