There are no raised static automatic weapons yet there are backpacks for it?
In the static weapons list the only automatic weapons available are not raised.
The two backpacks that are not working:
Dismantled Mk30A HMG (Raised)
Dismantled Mk32A GMG (Raised)

Either way i tried assembling these along with both folded tripods and
they did not work. I could not get these two backpacks to work with anything.

So what exactly are these two existing backpacks and what are they used for?
Since there are no automatic raised static weapons in existence and their name is quite different when comparing to the non raised versions.