I've always thought the idea of integral firing pins as part of the hammers a bad idea. I've only owned a few guns so outfitted and never had a problem but if the pins shear off the face of the hammer, what can be done to remedy it except to try to find another hammer --- something near impossible with vintage guns. It's a relatively easy fix to turn new pins using drill rod on guns with separate pins. I've made two sets for my Zephyr 20 bore sidelock ejector in about an hour's time. Easy job, but where would I be looking to repair a gun where hammers and pins are the same piece? Anybody ever thought about this? Chopper