Oh yes, I remember it well.
After passing my kradmeldertests, i was issued a U.S. 1911 pistol (12mm) (45cal). (beutewaffe)
Our melders room was right above the C.O.'s office. I sat on my cot, , took it apart, put it back together, and without thinking pushed the ammo clip is. next 'firing pin release." and . . . . . . .BANG !!!!!!! right through the floor, and into my C.O.'s desk, while he was sitting there.
ALL non comissioned men had to turn in their weapons, and only after I got visited by the "Holy ghost" did they get them back.
Including me. i had become a "safety expert" in record time