Hey I'll be making another one so I'll be sure to post a video for our new cannon!

Thank you so much Gun Freak :wav:

Ok well the psi I use is about 90... And I'm not sure about all those stats mattyzip77 sorry. And for the piston its a plastic piece with 2 O-rings to seal it and the bumper is just leftover rubber tubing.

Yes it is and I'm 13 and thanks for comments and I built it with my mom's boyfriend like I said in the description.

Yeah I'm sorry guys I'm just getting used to this site so I'm not to good with It. And I just recently shot a hole through my garage with it so I'll get some more pics and sorry again for my lack of skill..........

So in our free time my mom's boyfriend and I built this cannon. We did a lot of research to find the best way to fire the air out of the cannon, so that we could get the best results. And we found a lot of cannons that used the modified sprinkler valve and some others used the piston seal off method...

:blob: This might be, I mean it is the best pneumatic powered gun I've seen so far. You did a great job for this being your first one.