I am thinking about getting a Magnum Research BFR at some point, but they don't offer any barrel lengths that I am interested in. So, I thought if and when I do get the BFR, I might send it in to Mag-Na-Port to have the barrel cut to 5 or so inches and have it ported. Does anyone have experience with BFR's or Mag-Na-Port? I have read good things about the BFR's. Does anyone know about how much Mag-Na-Port charges for a barrel chop and port? Thanks guys.