Trade is not in my vocabulary.
Repeat after me. . . ."Supplement, not replace." Say again. . . "Supplement, not replace."
Keep the Italian made Beretta 92. Save or even borrow the money for the 686. It's not that much pocket change.
In the very near future, you may not be able to replace the 92.
I sold a Colt Combat Commander (like a fool) and regret it EVERY day!