Not to many pumps aren't durable. They were a repeater for salt of the earth folks.

That said, the problem with a model 12 that I don't like is when they break the firing pin, and it protrudes in the broken position enough to fire a round on closing. Unfortunately, that is a fraction of a second before lockup is complete. It can be, spectacular.

I own a copy of a model 1912. My favorite, however is a model 37. Neither gun was built with solder.
Best,
Ted