Stan,the factory sight on a Marlin 30AS looks like bent sheet metal. It's definitely functional, but it looks cheap. The rest of the gun looks well-built. I tried a Marbles folding rear sight, but I could not get the rear sight low enough to work with the front sight. There are a few rear sights I like the shape of: such as the original Winchester 1894 ladder sights and the Marbles Folding Express sights. I thought I might borrow some features from the ones I like and build my own. Of course, I enjoy the learning process too. With the help of others on this forum I made the blade for the front sight on my Ruger M77 MkII. A talented gunsmith, Matthew Roberts, machined a custom banded ramp, and shaped the blade and placed a brazed brass sighting plane onto it. Kind of a sourdough style blade with a brass sighting plane. I agree building a rear sight from scratch would be a big under taking for me, but I might do it. It's also the kind of project where I can try it, and if it doesn't work no harm done, just reinstall the factory rear sight.
Larry
