I'll take some photo's of it after I unload it from my truck, the legs are from an old Bartac sewing machine
from work the top is some exotic decking material it is hinged at the front and uses a M1917A1 elevation device from the M1917A1 tri-pod with brackets I bent at work, I designed it so if firing the mortar and needing to level it I could do that, and firing the little cannons I could give it an upward slope
for recoil, it worked well at this event there is the beginning of a shelf at the base which I plan to have set up so if I need to I can add weight to it for stabilization.