I was the man standing behind the other man! My Johnson is going nowhere near that thing!!

Surely fig 2 is basically what i've already made, only the blow gun trigger is replaced by the ball valve!

How does one measure muzzle energy? I didn't even think of the legal aspect! Has anyone ever been arrested for making a spudgun?!

So it started as a casual bet between me and my brother as to who could build the best one. Here's mine. http://www.youtube.com/watch?v=8CI32h6fqVY&feature=youtube_gdata_player It's pneumatic, this is at about 60 psi. The valve is rather clever though I say so myself. Looks like a standard ball valv...