How to switch between two primaries?

[Henyo10 23]

Asking cause I've worried I might delete either one of them. On a sidenote how do I drop something directly from my bag to the floor?

[NinjaFate 0]

Make sure you have an empty slot in your bag AND your actual inventory, then move the primary from the bag to the inventory, and it will move the one in your inventory to your bag, don't try it the other way around. Not sure about the second question though, sorry.

[Shomet 0]

Make sure that you have 10 spaces to place something in your bag/inv and from what ive seen if you try to place a weapon int a bag without enough space and will vanish into nothingnes

[clever 12]

You need a backpack with more than ten spaces, primary weapons do take up ten spaces but it won't work until you get a pack with more than ten. So you can't for example stash a rifle in a coyote patrol pack.