No problemo bud, pretty much everything came from this one site apart from the helmet and PPsh41 itself:
http://www.tridentmilitary.com/
They are a bit expensive but they have everything you need in any size (including XXL for big lads like me!)
Click on the "Soviet WW2" tab then the "Soviet WW2 package deals" you can pretty much get any look you want!
Its a one shop stop for the whole impression!