I REALLY BADLY WANT A BM NOW, shot one, a couple months back. STOCK except for barrel on semi. And it was keeping up with my teammates pm6 with UL frame on psp ramping capped 15. I really badly want to know how much it would be to get a black/cobalt BM mixed with yellow parts like the front block barrel tip feedneck, top part of the reg, plz help me. Or would i have to swap parts with somebody.