Do you know what I just realized is the dumbest gun part ever affixed to a gun? A "loaded chamber indicator".
Dumber than an integral lock, dumber than a magazine safety.
What's it supposed to do? Encourage people to think "Well, it's okay if I point this thing at Cletus over there because the loaded chamber indicator says it's empty..."?
Its very existence betrays a bad mindset to have around guns, which is the idea that "This one's loaded, so I'll treat it with extra special caution!" The problem is thinking that way implies the unwritten corollary that "I don't think this one's loaded, so I can handle it sloppily," which almost unfailingly comes back to bite the unwary in the arse and leave bullet holes in things better left unpunctured.