That's what I pay the fee to my FFL for, TO KEEP TRACK OF MY GUN once received.
I've ordered multiple guns in one week before therefore I mailed out multiple money orders the week prior along with a FFL copy. I did not know where the guns were coming from if asked on a spur of the moment. Check your safe, it has to be there and my name should be associated with it (I always request that the sellers include my name with the firearm they ship). But then again, I don't show up to my FFL asking if my gun has arrived.