i used ironman is mag and rail system
it shoots around 60 feet
and you can remove the carrier and put a red dot or a scoop it
it looks reaaly cool

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rebuild it and please post it
http://www.instructables.com/id/Knex-M4-Carbine-Assualt-Rifle-1/
Needs a tad bit of mods but nice!
But I could possibly post mods when I build if I have permission?
lol unless you want to make aa separate ible just tell me
And I'll sub to you so I know when you post :D
And we'll see about the mods haha.
i cant use ibles right now because i have to go to bed and i cant use ibles on my ipod but i can use skype. if you have one send me ur name at moez.bhatti@gmail.com
or if you have msn and you dont mind telling me send it there too. lol i go on my ipod when my parents think im asleep.... MUHAHAhAHA
also, tell me your skype name and until tommorow, i wont be able to reply to ur ible comments, my ipod lets me see them, not reply. TELL ME QUICK!!!!! and my name is Moez btw
Look at this!
heres a few pics
but thanks for the 4.5 star