I'm going to buy KWA M16 with steel rails
but I'm wondering if the rails are weaver or pinnacle?
Also, this Hop-up upgrade from the KWA Pro Shop: http://store.kwausa.com/km16br.aspx
is it already instaled in the KWA KM16BR or do I have to buy it?
Edited by Jonas888, 13 June 2009 - 02:49 AM.