Nope, it has the punch/brush adapter holes.
Leatherman representative emailed me back and informed us all that the plier heads are indeed 420HC on all plier models. Adding the threads to the pliers head on heavy duty LM should not be an issue. Little patience goes a long way while drilling and taping. If I do the mod, I'll keep y'all posted on how it goes.Or if someone else gets to it before me. Please share.
I did not know that Good to know that they are the same type SS as the restbif the tool and I hope you are able to drill and tap it to make it work like you want
If i'm correct, i remember there is Charge with 154CM blade and for that one i remember it was stated that the plier is also from 154CM.