...I think this heats up the trigger return spring and weakens the metal. I never really thought it had to do with a design flaw itself until I talked to cajun gun Works and they identified it as a flaw.
Trigger Return Spring: It MAY be a metallurgical issue if the CGW springs last longer, and some seem to think they do.
That said, I'd be very surprised if the heat from working the spring by FIRING the gun would have as much effect on the metal in that spring as the heat generated by simply firing gun rapidly. You'd really have to get that spring very hot before the HEAT would begin to degrade the spring material, and IF pulling the trigger generated that much heat, I suspect some of that heat would transfer to the trigger itself and be noticed. I don't think it is.
Firing Pin Retention Roll Pin Breakage: It may be that just lengthening the cutaway area on the top of the firing pin, the ends of which stop the roll pin, could be a solution, or a different spring design (maybe a variable rate spring, or simply a lighter spring). The firing pin retention roll pin [FPRRP]is there to keep the firing pin IN the gun, when the hammer is
NOT* down or at the half-cock position, and there may be a better way to do that -- like the firing pin stop plate that was replaced by the FPRRP.)
(*I mistakenly omitted the
NOT the first time through. That wasn't what I meant!! I edit too much. I wonder, too, if a larger diameter FRRPR -- maybe a solid one -- positioned a bit higher in the slide make take the abuse a bit better? That wouldn't help with existing guns, but it could make it a non-issue when newer models.)
- I don't know how much money CZ has saved by using the firing pin retention roll pin rather than a firing pin stop plate, but I suspect that design feature has cost CZ more in terms of customer satisfaction and criticism (and maybe, warranty work) than the production cost savings it has generated.
Other Design Issues not Addressed: the fact that CZ hasn't bothered to incorporate design changes that will allow a shorter length of trigger pull -- something that CZ CUSTOM and Cajun Gun Works did years ago. CZ could also
improve their sights a bit without changing production costs much (if at all.) I've never heard ANYONE say anything nice about the standard CZ sights.
Production Short Cuts: The fact that many other guns come out of the factory with better triggers is a competitive feature that works against CZ. Or that the SA hammer often cams noticeably (moves to the rear before dropping), when released, delaying and degrading what could be a great SA trigger. We know that the competition's hammers address this and basically avoids that trait. Some have argued that this was a corporate decision, influenced by lawyers who want to reduce potential corporate liability, but that simply doesn't make sense. A clean SA trigger doesn't increase liability -- if it did any number of 1911 custom gun makers would have been put of business long ago.