The E11 is not exactly a replica of any gun, it looks like one yes, but is a fictional issue of a gun. I know that it is based upon a real gun, but I think the laws in Canada re referring to Air-Soft guns, which are identical to the real issue... Not a movie prop.
I know my own gun, does not have a moving rigger assembly, and can come apart easily if tampered with... glue and such could be broken with a hard enough knock. No one had any issues, but I agree with most, if it ain't broke, don't fix it...