Neato! MAKE parts from volume 03 hits eBay! Yes, This IS what you are looking for! As Seen in “Make” the Magazine. These are the Barrels for the Launchers. In the picture you can see part of the length you are getting. The $2 bill is laying on the inside of the pipe to show the transparency, The Color is Blueish. Link.

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You can get a better deal from US Plastics.
3 feet of 2″ pipe and 1 foot of 4″ for $33.76
http://www.usplastic.com/catalog/product.asp?catalog%5Fname=USPlastic&category%5Fname=54&product%5Fid=16628
US Plastic has a 10 foot minimum per order! That makes it a grand total of $166.30.
it says its sold by the foot from that link. so if i ordered a quantity of 4. would it just give me one 4 foot piece? or 4 1 foot pieces?
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Make: School’s Out! Summer Fun Guide
This Summer Fun Guide is brimming with over 50 projects for kids of all ages. You’ll also find inspiring young maker profiles, as well as tool reviews written for and by kids! Plus, it’s our 3D issue, complete with 3D glasses and tons of super-cool 3D photos!
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