I'm using the coronavirus lockdown to make a non functional replica MKII ( I can't own a live one in the UK ) I've looked at various plans and PDFs online and none of them match the real thing as far as I can see. Can anyone help with actual measured dimensions from a genuine STEN ? Most urgent. Od of rear end bushing ,both steps & depth of groove for stock plate. Od of barrel and length Length of stock main round bar/ tube Butt plate and grip plates dimensions Trigger housing, all dimensions and locations of holes