I have a post 64 that needs some work. One of the upgrades needed, is a new site setup. It has the big blocky blade in front, typical ramp in back. Being ugly is bad enough, but I'm older, and can't quite see the rear site, front site, and the target. Just 2 out of the 3. I tried a peep site on my boys AR, and that helped. I just don't know what the options are, but I did see some that were very pricey.