Heh heh, the infamous "Lethal Weapon 4" Beretta take-down <img src="/images/graemlins/smile.gif" alt="" />

I too have heard stories of criminals practicing this maneuver (Lots of cops in Kali, particularly LA, are/were issued the 92). Even firearms/tactics instructors I respect have passed on this warning. Can't say I have ever heard of it actually happening though.

FWIW, Beretta makes a factory dissassembly lever without the ledge, so you don't have to dremel yours if you don't want to.

But I wouldn't worry about it overmuch. I doubt many criminals would recognize the model in a low light situation and a grappling match for the pistol is a serious affair, regardless of the make. Better to learn some retention skills than stress over a perceived weakness. There are LOTS of pistols out there that can be disabled by manipulating the slide and a slide stop or dissassembly lever, not just the Beretta.