how can you trigger things when they are shot. eg, the bell on anzio rings when shot.

make it a func_button {or make an invisible func_button using null texture and renderamount 0- to clip a model or something}
give it a health of 1
delay before fire 0
delay before reset 0.1
target your ambient_generic {or wutever}
then tick the first 3 flags:
-dont move
-allies cant activate
-axis cant activate

this is how the tank on old ramelle was clipped for example

ahh, thx :)