So, There it is.

"Portable Ammo pack" or "Ammo supply"

Basically, it is an ammo pack, that can be bought in shop and thrown to the ground.
It will allow you to share ammo with teammates. (Or use it by yourself)
Just like in "battlefield" game series but only one person could pick it up instead of ranged ammo "regen" mechanic.

I think that it should be perked as "Commando" weapon and cost around 500f for everyone but "Commando" and around 250f for lvl1 Commando and 25f less for each next lvl. (225 - lvl2, 200 - lvl3, 175 - lvl4, 150 - lvl5 and optionaly 125/150f for lvl6)
Also, like the demo's mines/bombs, everyone but Commando could only take 2 packs.
Commando could take 1 more for each lvl from lvl3 (3 on 3rd lvl, 4 on 4th lvl, 5 on lvl5, 6 on lvl6

Weight: 1block ( not depending on how much you take (similar to bombs))
Not able to refill from ammo packs on grownd. (Unlike the bombs)

MUST BE DROPPED ON SOME DISTANCE TO PREVENT "INSTA-SELF-PICKUP" (UNLIKE THE DEMO'S BOMBS.

I made this discussion because I dont know how to make mods, so just do it for me and yourself, if you are modder.