ono the great

I might be posting in the wrong place here, but will I be banned if i pick up a weapon that is scripted into the game? (I mean its impossible to tell if it is) Last night me and my friend were meeting up in cherno and he met another survivor and gave my friend a silenced M4 and then when I arrived he gave me a sniper rifle, he claimed he had the "biggest" backpack and could carry two guns in it, (my teammate suggested shooting him for the rest of his gear but I thought it would be bad karma considering he gave us guns) We have never played arma & arma2 before and just recently bought dayZ (best game ive ever played might I add) Appreciated if someone could tell me what I could do or what will happen.