Eagle Imports has a small number of tritium night sights for the 10mm (actually probably any of the MK12 family). They were not listed on their web site but I emailed them and they said they had them so I called them and ordered the front sight (I had purchased the rear sight before Christmas). So if anyone is looking for them give them a call.
My P40 finally released from custody and on its way back to the PNW!! Yay!
LOL, good luck!