Anyway, I pretty much always grew up with the thought that dry firing guns was bad for them.
Now-a-days, not so much. Most are OK, only a few are not. Check the owner's manual.
Those I know that you should not dry fire are Taurus revolvers, and the Kel Tec PF9.
"As was the man of dust, so also are those who are of the dust, and as is the man of heaven, so also are those who are of heaven. Just as we have borne the image of the man of dust, we shall also bear the image of the man of heaven. "