the orange part is the counterlung
the leftmost blue and the grey part are the two srubber canisters
the rightmost blue part is the 1 liter pure oxygen tank with the first stage regulator attached
the bottom tank is a 2 liter air tank for bailout and inflation,which i built in by myself
on the enlarged view you can see the selfmade mouthpiece adapter for using a normal regulator mouth piece instead of the original fullface mask