Doesn’t work in hk pistols - SightMark Accudot 9mm Luger, Red Laser Boresight

Bought this to rough zero my Holosun 508 I just had machined and mounted to my VP9 slide. Once I received this product, I charged it up and tried to get it to work. Found it wouldn’t work in my VP9, so I tried it in my P30SK, same issue. By taking something metal you can set it on the lasers case and it turns on? Upon inspection found that it doesn’t sit tight enough in the chamber to electrically contact the laser to activate it. Kinda pissed cuz by the time it was charged up and able to use the packaging was long gone so I’m stuck with it now.