A .50 BMG is on to-do my list in the next 12 months. I need something to put on top of my Jeep! I've been looking on gunbroker, but auction prices quickly get out of control. SOOOO.... I'm wondering if there's a good place where people go keep an eye out for parts kits. I've found M2HB.net which seems to be active, but not that many parts get posted. Any other places they may be floating around?