Full auto battery shooting air gun 600 rounds per minute
Channel: ukilliheal
Date: 05/11/2011

In this video i demonstrate that my air gun is able to shoot 600 rounds per minute. The batteries come out at around 200 feet per second.

The rod sticking out of the mag is a guide rod for the follower & it holds the expansion spring. I wanted the mag to hold as much as i can so i made the spring external. 

When the gun is fired, the bolt blows forward and clears a plug allowing air to flow though it in to the barrel.

Cost to build the bolt & barrel (excluding tools): $10 and i still have enough pipe to make 3 more.

Estimated cost to build the rest of the gun: $30 (would be cheaper if i used all PVC)

Estimated cost to build the magazine: $10 + scrap sheets of 80 mil high-density polyethylene geomembrane

The PVC i am using is rated at more than 2x the pressures i am using it for.

I do have a smaller full metal tank that i will be testing with shortly - a smaller tank will increase the ROF but will decrease its power.

Here is a diagram: http://ukilliheal.deviantart.com/art/Full-auto-55-cal-AA-battery-gun-600-RPM-diagram-282972092