The other thread got quite long before I could ask this question. I have read about the hardness of the K 80 guns so that Krieghoffs could only be engraved only by krieghoff them self before hardening makes sense if you are krieghoff shut out the aftermarket engravers. The issue for me is if the hardness is the possible cause.After all K 32 guns have been around a lot longer and are softer less brittle with out the blow up record of the K 80 Just a thought looking back and yes I have owned both with out any issues but it seems like something is a miss.