Aren't P+P making the Dark cockers now? It used to be Pro Paintball, so they were basically Freeflows with different milling.
As for bolts, I think most can be had for Evo length, as a lot of guns nowadays have cut body\backblocks. Unless you want a Belsales Evo bolt, I think your only chance to buy one, will be to import one from the US. Unless someone knows if LPS, Rekka or Planet sell Evo length Shocktech bolts????