I see were you’re coming from here.
An Aluminium backed depleted uranium slug launched in to the breach by compressed air and zotted up the rear by a Laser.
The rest is a symphony of magnetic effect for acceleration and thermal amplification caused by the magnetic field interacting with the plasmaised Aluminium.
Hmmm… Could work.
More subtle than a rocket powered chainsaw sporting crowbar.
But not by much.
Of course, there’s other ways to wring destruction out of it.
What is it used for?