The gun started as a armscor 2011 I had built for limited all internals changed and hand tuned but a gun Smith I want to get a feel for open with out the total commitment i.e I can remove parts and still have limited gun that being said I know 9mm and 38 super rule the roost in open but I'm not going on a pro tour in open any time soon (plus free brass for .40 is the biggest factor)