True and I would (have) love(d) to get some MK262 Mod 0/1 for my rifle. Sadly, if the MP's or the CoC would have found out about someone being shot with unissued ammo, the shooter would be in a bit of trouble, I think. Which is really silly IMHO.
Hell, I remember hearing about some junior officer putting an Americain .50 on a LUWV before we had our own there (2005?), who got in a heap of trouble over it. Morpheus probably know about it.
Trip flares are a bad example. Much like the white smoke grenades they are not meant as an offensive weapon. Also they are magnesium, not phosphorous, which doesn't make all that much of a difference to you when your face is on fire