Did you use the word "real" in tandem with the word "gunblade"? Oh lord......

Okay, here's the rant.....

Squall's gunblade wouldn't work. It has no barrel. The bullet would fire out of the chamber and smack right into the blade, damaging both the weapon and its user. Near as I can figure the darn thing operates on magic, which isn't something we have in this non FF world (or as some people have taken to calling it, "real life").

There ARE historical blades that can fire bullets, but they were flintlock style guns, not revolvers. The average reload time on one of those things is over one minute. I've actually seen them on sale at my local rennaisance fair in dagger form mixed in with the pirate weapons (ARRRRRRRR!!!!!!!). However, you would never be able to get away with using one of these for your Squall costume. I'm guessing that since you put this thread in the FFVIII forum you want one that resembles Squall's.

If you still want one, probably the best place to check is ebay. To my knowledge, Square has never issued an "authentic" gunblade. There have been pendants of Squall's revolver, and other collectable miscellany, but the closest you'll get is a mock up. However, do not expect it to fire. If it DOES fire, STAY AWAY FROM IT.