But I hadn’t realized that they are so easily gotten to.
Normal truck brakes.
I actually stopped and looked at one the other day, just to check. The police were VERY happy to show it off.
Now you know. I would imagine anything comparable to a .308 or .30-30 would do. A 55 grain 5.56-45 might not, at least not in one shot. But a heavier bullet should.
Now you have a disabled and non-mobile Mrap.
How things progress from there is up to you.
All knowledge is useful at some point.