I think there are some community-versions of airmodsupport for model pack 6, but I dont know about model pack 5.
I think model pack 5 is the coolest weapon pack released, but that may just be because I like Jon Fletchers style. Some would say the animations wont keep up with the standards as of today, even though they are fully functional and looks great ingame.
Model pack 6 got a more "up to date" feel of it.
None of these packs are made with Airmod or ironsights in mind, but its possible to add in for yourself.
I recommend you search around the forum, and YouTube as well since there are lots of videos showing these weapons ingame.

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