WE Katana gearbox

[dazzer306]

Hi all I have a WE Katana spilt gearbox, for the live of me I can't find a WE M4 receiver, so I was wondering if ( BIG IF ) any of the Nurprol M4's would accommodate this gearbox, I've tried other manufacturers but not fitting, and I didvreadvages ago the WE/Nuprol where the same if not simular, any help on this would be great as I've had this gearbox sitting in a box for ages 

[johnnyj]

When these first came out I modified a gen 2 classic army a2 body to fit the cylinder and others at time done this mod on vfc 416s. ( should have the body knocking about still )