If you have a local gunsmith that is willing to put a Jard trigger kit in your trigger body, it's the least expensive and in my opinion one of the best kits ever to make your trigger as good as the aftermarket guy's triggers.
Oh I had better ask is this the new Mark-X trigger? the one with the weight adjustment in the trigger? if so.. The Jard will not fit. then go with Trigger Tech, a Full Jard, Trigger Basix, Jewell, Shilen or Geissele. My personal faves are; Shilen, Jewell, and Jard. do not waste your money on Timney.. absolute junk without a full rebuild and milling of the mating surfaces.