Another option, if John at PFCGUK or Jay at MG-Props can't help is to ask Shazhib, a forum member in Japan if he could find you one on Japan's Yahoo auction site or in one of the many modelgun stores over there. He is extremely helpful and a pleasure to deal with.
_________________
Cerwyn
Hobby collector of Replica model guns and Militaria.
also member of Living History Reenactment Groups.