In case it isn't noticeable, have a look in the hammers (#33) and where they Call the firing pin, proven in the suggestion of my probe: Bullet details ought to be about a similar length; you don’t want a single being super short, although the others are all long. https://preniumdirectory.com/listings13139949/a-simple-key-for-les-baer-gun-storage-cases-with-combination-locks-unveiled