

What I need to know is what is a good rear sight that won't break the bank. A flip up type might be cool if I decide later to mount a low power scope to this weapon and want to keep the iron sight as a backup. Keep in mind that I have aging eyes, so I don't know how small the aperture can be and still be useful to me. I'm also open to the idea of red dot or holographic sights, but I probably can't afford most of them.
Any and all suggestions (besides "sell me your upper") would be appreciated.

Thanks.