More than likely it will last a looooong time. Mine is from 1983 and has never had any issues what so ever. That said, if it helps you sleep better at night, a hammer and trigger assembly, side plate screws, cylinder stop & spring and an over sized hand should more than do it. Just look at the thousands of guns re-sold every year that are 50, 60, 70, 80 +++ years old and work like they were made yesterday.