Best Tonneau Cover for the Rambox

[Jakmc25]

Anyone with the Sentry or Sentry CT can you confirm if this cover uses existing rails in Rambox bed or does it come with it’s own rails?
I just bought a used Ram with Rambox but it doesn’t have the bed rails not sure I need to spend the extra $400 on rails or not.

 

[grimreefer]

Anyone with the Sentry or Sentry CT can you confirm if this cover uses existing rails in Rambox bed or does it come with it’s own rails?
I just bought a used Ram with Rambox but it doesn’t have the bed rails not sure I need to spend the extra $400 on rails or not.

I don't have the Sentry, but according to their instructions it uses the existing silver rails. Sentry Install Instructions

 

[Jakmc25]

that's what i thought but my truck does not have them. And i called a local cover dealer and they said it doesn't but that is not how i read the directions either.