[archy]

Those might come in handy.
"Hey, there's a jihadi hiding behind that truck over there!"
"Oh? Not for long."
*sound of ack-ack slamming vehicle apart*
"No more jihadi. Where's the next one hiding at?"

A quad 40mm ought to do nicely, as well. But I'm antsy about anything of the sort around fuel tankers.

[Darksheare]

True.
Anything that pops the round into a spherical fraggo cloud close aboard is probably a bad idea.
Unless it can be used further out and then switch to secondary guns.
But that's a pain in the butt.
Hmmm.