I have seen some of the Philippines 1911's develop distinct wear marks (and gouges) on the slide stop where the barrel lugs come in contact. And every one had less than 1000 rounds.
I would double check all parts when cleaning for rapid wear. Should the slide stop fail, you could get an exciting surprise.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)