Homemade Gas Powered Machine Gun

    This video shows an impressive homemade CO2 powered fully automatic air gun. The magazine holds 23 AA batteries and it can fire them at a rate of 600 / minute. It is impressive how well it cycles.

    The inventor wrote on YouTube …

    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.

    [Hat Tip: Hack A Day]

    [ Many thanks to Victor for emailing me the link. ]

    Steve Johnson

    I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!