The sniper papercraft is finished!
I haven't done instructions, I probably should do. I'll let everyone have a go with the .pdo themselves and try to work on some instructions while I assemble it myself.
As with the Scout, I'm relatively confident it'll work. The gun might be very fiddly.
If you want to make the model bigger you can get Pepakura to work it out for you. Go to 2D Pattern Window --> Change the scale of development. You can change it by model size or percentage and still print on A4!