Those damned PIAT !

[Extraordinarius]

Well PIATs are different from both Bazookas and Panzerschreks in such as they were spring loaded.

Maybe your guys just weren't strong enough to operate it, i.e. compress the spring far enough for it to catch. (Would be surprised if that was programmed in, but you never know!)

The PIAT was a bear to cock for the first shot, but the recoil recocked it therafter. The abilities to shoot from small enclosed spaces and for a good crew to fire a shot every five seconds were advantages that compensated for the strong recoil, marginal penetration and unwieldy cocking system. These seem to be among the advantages of Allied weapons that have been edited out of the game.