The AT4/Stinger glitch caused by addItem/setInventory/etc. events is fixed now. Currently I'm replacing the crappy grenade ammo system with the one I use for the weapons. That means you can refill grenades/etc. with ammo boxes and you'll get extra grenades/etc. with the tactical vest. Also, grenades can be thrown farther from now on (incereased by ~1/3).
[Edit]
Don't be suprised, I made a mistake with the teargas grenade. Also, the C4 and mines still need that fix.