Jim, I'm glad our club appears to be flexible on rules and equipment definitions by not strictly enforcing equipment definitions. At the end of the day, our IDPA club matches provide an umbrella for me to just go out and shoot with pistols I like to shoot with in a format that enhances my attention to safety and shooting skills. I'm not getting on Practiscore to figure out where I lined up vis-a-vis others (kind of a waste since 70% are shooting Carry Optic which obviously gives them a decisive advantage and I like to shoot CDP which, given ammunition restrictions, mean you will necessarily be behind everybody else from a time perspective) and I'm not planning on going beyond the club to sectionals, state, nationals, etc. If our club did USPSA, ASI, or whatever, I'd be fine with that umbrella, too. Today, we are doing a 3-gun shoot which is basically show up and shoot anything you want. I like that. For those who are really "into" the competitive aspect and want to see rules enforcement at higher-level matches, I respect that. But since the mod rules are kind of arbitrary to begin with, why preclude people who would otherwise want to participate at the club level just because they have a custom barrel bushing?