After spawning the gun you'll notice it's on wheel mode. click the front handle (on the opposite side of the drag hook) of the gun mount to un-wheel it.
click the back of the seat to sit in, grab the seat bottom to lock your view , only gunner at the left side can control the gun.
left handwheel if for horizontal rotate and the right is for vertical.
while holding the horizontal handwheel, joystick down or AXBY button to fire (depends on which locomotion mode you are using)
The wheels are sometimes glitchy.
it can hook to a UAZ jeep.
it won't sync in H3MP.
may cause issue with malfunction mods.
If the terrain is too complex to spawn the howitzer, try the airdrop one.
1.0.0 Added ZU-23-2 in Tools&Toys----->TippyToys.