I am starting to setup dedicated guns for IDPA SSP, ESP and USPSA Prod and Limited. I then have to reconfigure them when I shoot GSSF or one of them needs work. Has anyone put together a simple list or spreedsheet that shows what mods are allowed in different classes of the different organizations ?? What sites, guide rods, springs, extended controls, grips, slugs, magwells, etc.... There is nothing worse than getting halfway through a match and realizing I have a grip slug in my glock and am suddenly moving out of production !