Listen, what do you want? Step by step instructions, with blue prints, and a kit with all the parts ready to put together? I'm sorry your brittish and only have a 1.5 weeks to work. What are you looking for really? You want us to do all the R&D for you? As said before try BAMF it's much simpler and you get instructions with photos. You'll have to look for the equivalent Brittish parts. Most of us are from the US or Canada and make home made guns from the materials we find here. The best we can do is give you ideas. You'll have to do the rest.