i want to turn my 1187 into a police build. i found the barrels on remington's website so now i'm torn as to whether i want to get the rifle sighted 18.5" ($160) or bead sight ($130). opinions? i'm sort of leaning towards the BS since it's cheaper and both my 870s are BS as well... also, anyone have a spare factory remington +2 extension they want to sell? i need two.