I was working on my Nagant revolver. I was taking it apart for cleaning, and removed the chamber gate. Well, there is a piece of steel that applies pressure to the gate, and the tension is controlled by a screw. Well, i forgot to loosen the tension screw. When i removed the screw holding the gate, it flew across the room, with the screw flying in a totally different direction. I ended up having to buy a new gate screw before finding the original one.