Had to make a new firing pin once for a ‘92 Winchester SRC. I recall making another once also, but can’t recall what for. Brother had the bolt handle come off a 788. My other brother has had a couple of shotguns spontaneously disassemble, one an Ithaca sxs the other a Browning Double Automatic. (He can only use one arm and shooting a shotgun without the recoil restraint of a hand on the fore end creates issues, apparently.)
I had a Ruger tanger discharge when the bolt was closed energetically.
I have had to disassemble completely and thoroughly clean and relube a couple of BLR’s for friends and relatives. They just got crudded up/neglected to the point where they wouldn’t work.
I had a Marlin GG brought to me once that “just jammed up.” When I got it apart the inside of the action had slivers of what looked like yellow pine in it, pallet or packing crate material. Another GG I could always count on having to disassemble and clean at least once a year when my buddy would do a face plant in the mud with it.
