I am getting ready to Duracoat my XDm upper in Magpul FDE and was wondering about putting on nightsites, should I have sites put on before or after? I fiquered after and if there are any scratchs I can touch up(shouldn't be scratches though sending it out to have sites put on), I fiquered if I done it before installing sites I am less likely to get any duacoat in or on sites(They will be taped up but Murphy's law happens). Also who has best tritium nite sites. I have done 3 Ar15s in FDE so I am not newbie to Duracoating, just unsure about site issue. Will post pics before and after Duracoating, ran out of hardener so will be after Thanksgiving before I can start.