Hi came across a yahoo group which has excellent railgun info and pics, everything from camouflage schemes, original colours to travelling mode. If your building a k5 you should probably join this group and have a look.
Just hope that they don't mind being swamped.
You will have to apply to join the group and will need a yahoo email account. If you dont have one and dont want to get one pm me with the questions and i'll search the group for you.
heres the link
http://groups.yahoo.com/group/railwaygun