Ultra long range rifle scope attachments/accessories

[goodkid1]

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

[Robinhood]

https://tacomhq.com/charlie-tarac/

[want2ride]

here is the other one.
https://www.nightforceoptics.com/riflescopes/accessories/wedge-prism

[Txhillbilly]

There are adjustable bases for ELR shooting also.

http://www.watersrifleman.com/elr-steel/

http://iveyshooting.com/