16 oz?? My CC weighs almost twice that unloaded, and it's considered a compact!
Um...16 ounces...one-stop shot...
Maybe a zip gun with a .50 AE round in it? Good lord, I don't know. I don't even understand how the question is relevant or even ultimate, since I can't think of any circumstances that would cause you to have to limit yourself to such an incredibly small weapon.
For crying out loud, even a Glock 26 weighs more than that unloaded!
"The CZ75 is made of win and longcats."--anonymous youtube comment