Many many long years ago I was shooting a National Match 1903A1 in a club match at Camp Smith in Peekskill, NY. It had a Marble Goss bolt sleeve sight and an Ace trigger shoe. In the middle of a rapid fire string (noone would so treat an NM Springfield today) the shoe fell off, I yanked the trigger, somehow my position got distorted and the sharp cornered sight banged me in the snoot. It bled pretty good for a few minutes but there is no scar.