I used to shoot production in USPSA with a G34. However, if you really want to shoot IPSC, then you have to go with the shorter G17. If you go with the G17, you might want to consider a 3.5# trigger connector. I put a Vanek custom trigger in my G34...pretty nice. Not sure what is state of the art in production USPSA now days...I have been out of it for two years.