StoneColdFreak:

Looks like the Leo 2's hatches operate the same way they did on the older 1A4. That said, I could send ya some close-ups of the ones from my Leo and you might be able to craft yourself up a hinge mechanism. Faster yet is me uploading the assembly page for the Leo's turret hatches:








As for the smoke pots, AFV-Model has them, but they ain't cheap.