It is determined by the objective of the gun along with the extras you intend to set up. You could decide on Lever rail on your own or Lever rail with ghost ring sights. Rail will likely be required if you wish to put in some in your Marlin. I https://madbookmarks.com/story15592025/how-marlin-dark-series-for-sale-can-save-you-time-stress-and-money