I did my BB with a M9 which is the same pistol. Shot many matches and never had a problem with it until the locking block snap in half.
2 things bothered me though. First, the mag release is very hard to reach, The strong spring doesn't help either. You can either buy the OEM extended mag release or cut 3 coils off that spring. It's very easy to do.
Also, the trigger is not the best. You can try to polish it a little bit. Replacing the main sping with a G model will reduce the trigger tension.
Last tip, you have to be carefull with that safety/decocker. When racking the slide, you can accidently put the gun on safe. By the time you wonder WTF is going on, you just lost 4 seconds and screwed up your stage.
If you already have the pistol, then go for it. If you want to be competitive in IPSC, there are better options out there.