FJAG or others might know more, but if this was the prototype put together at GDLS London in 2003-2004, the LAV suspension was modified to fit it into the Herc, and the gun system for some reason was not well supported without the standard suspension. Also, when they fired the gun the back doors flew open and a lot of other things on the LAV broke. If this was the same gun … but I thought it was actually a 155 (or maybe a different project altogether).