actually you see alot in wars past where soldiers would take rations, ammo, grenades whatever from their fallen comrades. the weapons are probably always picked up because its either friendly forces get it or its taken and used by the enemy. i think individual weapons should be able to be picked up.
How about:
-Sniper rifles are able to be picked up, but if you are not yourself a sniper, your scope sway is greater
-regular rifles are able to be picked up by anyone, same goes for the carbines or SMGs used by antitank or SF soldiers- also shotguns apply to this, maybe increased recoil?
-Grenades restock when you go over the kit or body of a soldier who has died but still had grenades.... anyone can throw a grenade
-if you have the same rifle as a fallen soldier, you can pick up what ammo he had, maybe dead soldiers can drop those ammo bags, but only ammo that their weapons fired
-MGs can be picked up by anyone, but the recoil is stronger
-AT weapons can be picked up by anyone, because i think someone said before that all soldiers recieve AT training, but since AT is not their specialty, there is some sort of sway or something.
as for C4 and mines and such im not sure how training works on those, someone else can figure that out
