The firing pin stop is something that
gun owners frequently fail to check in the M1911 pistols, especially
important for those collector pieces from WWII. It is also tied in to
the firing pin, extractor and safety mechanisms.
A tight fit is best. The firing pin
stop may have minor wobble and still work okay as well as the
extractor will clock a bit and still work. The extractor spring is
also factored in because it must be solid, but not too solid. A weak
firing pin spring makes a bounce in the slide.
