go to any pawn shop and buy an old 12ga remington model 870. take your hacksaw and cut the barrel off to 18". buy some 12ga buckshot. keep the gun by your bed (unloaded), and the shells where you can get to them quickly. i read somewhere that the average distance (in aprivate residence)where an occupant shot an intruder was7 yards, in "low light" conditions. no need for a front bead sight, just point and click!