Nice! Does that go in the AC130 Spectre gunships?
My friend, a USAF pilot in Afghanistan, flew an AC-130 Spectre. They had a 105mm howitzer and 40mm Bofors cannon, plus a few other goodies on-board. He said when they fired the 105, the plane moved sideways 8-12ft. I have one of the 105 brass shells and a rack of 4 40mm shells.
You can see them on top of my safe, in the back.
http://i1308.photobucket.com/albums/s607/Family_Farm/DCP_0907a_zpse01f80b0.jpg
AC-130:
http://en.wikipedia.org/wiki/Lockheed_AC-130#Recent_and_planned_upgrades
