I have had a Beeman R7 for many years and it's held up perfectly. Don't know who really made it, just says Beeman on it. Bought it new around 20 years ago if I remember correctly.
Outdated by todays airgun standards I'm sure, but it still performs great and does what it was designed to do.
My brother who hunts and roams the woods has put many more rounds through it than I will ever do in my lifetime.
Maybe I'll even get to see it again this summer along with the Walther LP53..