Ultra long range scope accessories/attachments

goodkid1

Private
Minuteman
Jul 23, 2019
42
18
I am having a devil of a time trying to find again websites and/or videos describing ultra long range scope attachments. I think I remember one being called a "periscope, and another one that gave a huge extra amount of MOA adjustment ability...like 70 extra MOA. What are the two products I am trying to find? Thx :)