un1tec barrel, inter change front tips and back. 12"-16"i've got a proto 08 slg with the standard 9inch barrel and i was wondering if its worth getting a 14inch barrel. I've been looking at the dye ultralite though it costs around £70 is wondering if thats a good buy or theres a just as good cheaper one. Also am i right in presuming that the thread type is for makeing sure it fits on the right gun if so can someone tell me its size.