From what I hear it seems as if Tokyo Marui is making an AK with a metal body now, don't hold me to that because I cannot guarantee the validity of what I heard, it was just something that I remember someone commenting on. However if it is a true, then you've got yourself a quality AEG with a metal body that puts out a decent 280-285ish FPS. The price of one in Canada though will run somewhere around 4-600. A quick spring swap and maybe a change of one or two other parts to ensure internal durability and longevity and you should be good to go. For extra authenticity toss in an extra 100 dollars and pick yourself up a wood kit to install to give that full real feel.
"Its only a little bit on fire"