So I've been shooting my M1A for about a year now with a scope due to my ageing eyes. I took the scope off a month ago or so and have been using the iron sights and of course the eyesight problem is a bit worse than a year ago. So I started searching the web for a solution to this problem of aged eyes and possibly found a solution. After speaking with a couple of sight manufattures I found nothing is made for the M1A service rifle. I then called Springfield Armory and they directed me to Fulton Armory. I spoke with Chuck there and he said to get one of their hooded apertures and then get in touch with Bob Jones sights. http://www.bjonessights.com/SR.html They make these little lenses that go into these hooded apertures that can correct vision problems involving the post or target. In my case I need a better post so a positive correction or a (+) lens is needed. (So far I only need reading glasses) My reading glasses are an old script so I'll be going to eye doctor to check if I need a new lens script or not and then order this little diopter like lens to go into a hooded aperture for my M1A. I'm having positive thoughts here and will be as happy as a pig in you know what if this works Anyone here have any experience with this type of system?