I bought a BPS 10 the second year they were out. Named her Geraldine.
It was my primary turkey & goose gun for 10+ years. It got used for turkeys.............abused for geese..........patterns like a MONSTER.......... kicks like Festus's mule !! But to this day, she runs like a Swiss watch.
Take one apart sometime. You'll understand WHY they run like a Swiss watch. They have as many internal parts as a Swiss watch !! I will never, EVER disassemble the receiver of a BPS again !!!