Your garden variety AKM. It's the most prolific weapon in use by people who want to kill each other (...and not mug, protect their cowardly self or blow shit up) - and it's also the weapon of choice by the armed services in my country.
It's closely followed by the H&K G3 and FN FAL the two second most prolific weapons in the world.
...and finally the M-16 if you live in the States.
The rest of you sword maniacs can prance your overgrown blades and sharp & pointy things all you want. It's damn hard to find a properly made sword nowadays. Hell I've seen and tried good replicas, even had a little training with them. Killing with those things takes skill and years of practice - hmm... about 10 years daily practice - to be able to do it at the drop of a hat.
So wielding swords is nice and fulfilling but in an actual fight I'll stick with firearms.
WarLord wrote...
Squall's gun sword, so fucking convenient.
...more like fucking stupid. I had seen those things actually built. They're damn unwieldy (you're better off wielding a tea spoon) and the dead weight of the blade throws off your aim.