Hi,
When in 3den, right click on vehicle/crate can open the Object:equipment storage menu.
Instead of displaying tips about weapons which are the same as the weapon lbdata itself, this could be very useful to tip about the current (first) magazine to be added for the weapon. At this time, there is no hint about available magazines among all of them. Of course highlighted lines could be a must, but tip could be a fine workaround, imho.
Thanks
Keep Arma great.