ya I just purchased another golden 39A marlin ,these older marlin 39 A`S are my all time favorite 22 rim fires,what scope base fits these 39 A`s at my age open sights or a peep just are not enough anymore with my old eyes ?
I used the following on my 39D. In fact I use these mouints on all my newer rifles. One piece, no lapping, lightweight and USA made!
https://www.dnzproducts.com/product/game-reaper-marlin/
