How do you unlock the AK47?

[xlarryx11]

And the bottom left sub machine gun. I've picked the AK up at least in the Iraq level but it doesn't show up in my weapons crate. What do I do?

[xlarryx11]

And the bottom left sub machine gun. I've picked the AK up at least in the Iraq level but it doesn't show up in my weapons crate. What do I do?

[Erico360]

try co-op missions 3 aND 4 there enough over there.