Thanks paulruger. The peeps do work for me. Although the rear sight is still a bit blurry. I can reacquire target much quicker with my older eye.
I think Ruger sells them now. When I purchased them they were sold by 'One Ragged Hole'. Try ShopRuger.com. Or here. http://www.warrencustomoutdoor.com/one-hole-sights.html