I must finally come out of lurking and tell an awfull story that happened 2 months back. (No one hurt) I have a P-3AT with a CT laser and use to practice dry fire on a snap cap alot to tame the trigger and use the CT as a guide to how steady I was at trigger break. Became quite a good shot with this combo. BUT... And I don't blame anything but my bad muscle memory or lack of. I was showing a brother in law (a gun nut himself) my laser. First rule broken when I unholstered and did not unload immediatly. I figured I was just going to point the laser and return to my IWB holster. I for some reason had my middle finger (usually the laser trip finger) in the trigger guard. Now I am very good about that second rule broken. I never put finger in trigger area unless I double - triple check the weapon. second rule broken... Fortunatly I was good about the muzzle direction rule... and BAM ! ! ! Through the lower part of an exterior wall , shingles, 3/4 plywood and sheetrock into the back of an upright piano. I imagine my middle finger was instinctively tripping the laser and was not thinking about that long trigger pull underway. Needless to say I was completely stunned and afraid first of all where my mother was as this was her house. I see her shuffling around in the very back of the house so not to worried. Very shocked that she did not hear a thing and her front door was wide open. I was on an enclosed porch in the same airspace! She is not deaf at all. I call back "mom" you allright ? Yeh why? she says. The sound must have been no more than a door slamming or so she thought. No one in her front yard just outside the door heard a thing either. Go figure. Sub sonic I assume? Oh, and brother in law was more amused than shocked because of experience in much nastier gun situations. First thing he says is "good muzzle direction" The "noise" thing is just a curious side to this bad story. The real lesson for me was the first 2 rules and I no longer dryfire and practice with the laser unless I am at a range. It took me a week before I would take a gun out of my safe after that. Had to think long and hard. This was a hollow point so I am sure it now lives in the soundboard of that piano. I can't move it to find out. Hope this helps prevent a similar event for someone.