The first double I bought was a Pedro Gorosabel, 12 gauge, boxlock, double triggers, 2 3/4" chambers. I had learned just enough to be dangerous. It had double underbolts, Greener crossbolt, and sideclips. Case coloring and blueing were excellent. Hey, that's a steal at $400. Took it home and one side would not indent the primer. A friend said the firing pin is probably broken; no big deal, that happens all the time. Took the gun apart and the tumbler had split in half. I don't think that happens all the time.