Greets,
Once bought a LLamma 9mm used. It was a workable gun but I later found out that it appraised out at about 60% value, I had paid near new price for it. It would jam now and again and I had one round ( hot reload ) vent into the grips, no damage and no injuries thankfully but scared the begeesus outa me!
Only other gun trouble I had was my Iver Johnson 8 shot .22 target pistol, but it was older than the hills when my mom gave it too me ( used to be my grandads ) it is so sloppy and loose now that it is the only revolver I ever saw jam. The cylinder rocks about and locks halfway around to firing ( needles to say it is a wallhanget now and dont get shot ) Gunsmith says it isnt worth fixing, but since it was grandads, I keep it.

Just my uneducated opinion!
Terry