Most time, when player tried to get weapons or clothes from any place(box, vehicles,bodies) it doesn't work. Double click or drag to correct slots doesn't nothing. Ones have to drag it to ground and than pick it up.
- Legacy ID
Spawn any vehicle with items inside.
Try to pick it up.
This problem is the same for everyone, another way to take the guns, like from a vehicle by example, just get in driver seat, then get out, click Gear and take the gun to your inventory, which should work.