Everything in the weapons in controled by the weapons.xtbl and store weapons.xtbl as to what the the player is able to buy and not able to buy. I bet if we started looking into those files and a few other xtbl files in the same nature we can get it to work.I looked at BMS mod to see how he did but the format and maybe the way to do it is different but I asked how to do it in the Ask Volition section .
That's what I did and it didn't worked .