Whelenshooter:
You are frighteningly (nyuk,nyuk) close to the definition of this particular Frankengun.
Once upon a time, there was a polic department serving a large Midwestern city (which will remain nameless) that had an extraordinarily successful history with K-frame S&W revolvers loaded with 125 grain .357 Magnum SJHP.
Other departments aound them adopted 15- and 16-shot 9mm pistols. The department felt a need to do the same. They adopted TDA (traditional double action) Beretta 92G pistols, decocker only rather than the lever on the slide performing its usual function as both a decocker and a safety lever. This seems to have been done largely because the troopers in that state had adopted this exact pistol.
There came a time when a suspect fought a cop so equipped, got the gun away from him, and began shooting at him. As the story was told to me by people in a position to know, the cop took cover and escaped unscathed. As the perpetrator began his own escape, he shoved the still-cocked Beretta into the front of his waistband, with his finger still on the trigger...and, predictably, created a urological surgeon's nightmare.
Now (brief digression) had it been me in charge of such things, I would have gone to the nearest convent and asked the good Sisters to say a Novena in thanks (and I'm not even Catholic) and then would have begged Beretta to convert the 92Gs to 92Fs, which would would have had manual safeties, so maybe the SOB who shot at my officer wouldn't have been able to fire my officer's gun at him at all.
But, no, the person in charge decided that if the guy who stole the policeman's gun was stupid enough to emasculate himself with it, one of his officers might forget to decock and take his finger off the trigger and "decock" himself, too.
So, the department in question had Beretta convert the 92G pistols to double action only (92D) format, while leaving the slide lever in place. Thus was created the only "92G/D" pistols on earth -- no so marked, but obviously so defined -- with ambidextrous levers on either side of the slide that now performed no function whatsoever. They were sort of like a horse's snaffle bit...you could play with those levers, but they wouldn't do anything at all.
A few hundred of them were modified for the department in question. I have one, bought from the dealership referred to earlier. Hell of it is, the thing was dead accurate and shot perfectly to the sights. It's still in my gun safe, and a picture of that very gun appears in the Gun Digest Book of Beretta. Only a few hundred were converted before the department in question said "to heck with it" and bought Glock .40s for their cops, which are still standard issue there...
Ergo, that particular "Frankengun."