I am new to shotgun. I am looking for a shotgun for home defence (12 ga). This gun should be short and easy to carry. I've seen one in some magazine (I forgot). That one was a pump shotgun and pretty short and had a pristol grip only (no stock). I don't know what that is and would like to get one if that is legal to civillians. I am open to other models too. Could you help me out.