You are not going to weaken the frame by removing the hump or stippling thousands of people do this to both carry guns and competition guns without a problem. Cutting down the grip is pretty common on Glock's and now even M&P's and XD's. OP there are a few options out there and I am sure if you shopped around locally you could find a gun smith doing this work. However IMO the place to go is Bowie Tactical. His prices are not bad and his work is well known. He can do just about anything you like to the frame and even the slide. I wouldn't do the work myself. I am sure it is easy enough to do but I just don't want to take a blade to my pistol. I would rather pay and have a pro do it. http://www.bowietacticalconcepts.com/servicesandshipping.html I am about to send a Glock 19 off to have the grip cut down to accept Glock 26 mags and have magazine release scalloped. When it is done it should look something like this.
A longer sight radius and barrel with the Glock 26's grip length. The best advantages of both the Glock 26 and 19 and I don't really care if it hurts or helps the resell value because I do not plan to sell it.
Thank god Glock will sell frames separately That one is trashed.