maybe you got more then 2 laser actors? 
Either way I made this for you.
this is a 3 way of doing the overlap event. nvm the sequence…
if you only want to check for 1 type of actor you can use the method from then 0 on sequence and set the class filter to that bp.
if you want more then one you can take the method from then1 or the “On component begin overlap” and cast to the different actor types you want the laser to react to.
forgot to take the other actor to object on bp-explosion2 so you would have to do that.
Does this help?