 In this version, the "gun barrel" of the shell housed the Wii Remote and connected with its expansion port.A revised design was revealed on July 11, 2007 at E3 2007 with a form reminiscent of a submachine gun, in which the Wii Remote is fitted in the gun barrel and the Nunchuk is cradled in the rear handle.This design came about with the realization that making the Wii Zapper functionally independent from attachments would "allow for more diverse play styles."