[amd6547]

Some G30's had issues with the trigger bar having a dimple which caused drag on the slide and caused jams.
A search on glocktalk will tell you how to check if yours has the bad part.
The G30 I owned was faultless, and very accurate. I shot it as well as a full sized semi custom 1911.
I sold it last year, as I am reducing the number of calibers I own. I do still own Glock, though. That G30 made me a believer.