good for you I gave a 39a to my son also 15 years ago ,son still has the 39a the only thing we change back then was i put Williams peep sites on the 39a. I found another good used golden 39a but my eyes are just not as good as they were,so I decided to put a scope on my used 39a ,I was fortunate that I kept the scope base that came with my sons new 39a from years ago, marlin did provide a scope base with all new 39a`s. these 39a bases might be hard to find so you might need to advertise to get one or do as I did for my son get Williams peep sights for this 39a. good luck,Pete53