IDPA Stock Service Revolver (SSR) and USPSA. I've focused entirely on IDPA lately, but will start USPSA again.
My IDPA rig is a 4" 686, FO front sight (EGW on my 1° gun, HiViz on my backup), Millet rear sight (1° gun only), CompTac holster, ReadyTac speedloader holders and cut down JetLoaders.
My USPSA rig is a 5" 625 with HiViz FO front sight, Bladetech holster, North Mountain moonclip holder.
As far as the guns themselves, conversion to DAO, an action job, and chamfering of the chamber mouths are standard.