This is my new barrel sealing coaxial. I made it to be able to take to my friends houses and not be seen with a cannon. Muhahahahaha. The Chamber is 1" SCH40 PVC and the Barrel is 1/2" SCH40 PVC. The total chamber length is an incredible 1 foot! The entire barrel length is an even more incredible 10 inches. The barrel is level with the bushing, which is why you cant see it. The piston is a dowl, with a piece of rubber glued on it. I spent a grand total of $5.79 on this baby. This thing was extremely time consuming, it took about 30 minutes. Let me know what you think.
The entire gun</center>
<a href="http://img215.imageshack.us/img215/6667/pictureofme002hd2.jpg">The piston</a>
<a href="http://img215.imageshack.us/img215/7616/pictureofme003yl1.jpg">The fill valve</a>