I've got a G27 and it is a good size, albeit a bit thick. Shoots fine, but I put the pinkie rest on the mag for a little more control. I do have big hands though. I also have an S&W L-frame 7-shot scandium (Mountain Light) revolver that is lighter and probably just as concealable. I tend to carry that more often than the Glock.
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"Among the many misdeeds of British rule in India, history will look upon the Act depriving a whole nation of arms as the blackest."
- Mohandas Gandhi, an Autobiography, page 446.