Bed cover and rail system?

I've been searching without luck for a tonneau cover/bed cover that will still let me use the factory rail system and allow me to use the full length of the bed... any suggestions?

 

Bakflip MX4

 

Bison is another one. Same design as the Bakflip MX4 by relocating the factory bedrails lower.

 

Worksport AL3 also works with bed rails.
https://www.worksport.com/products/al3?variant=41150610800700

 

How easy is it to remove when I need to use the full bed length?

 

Thanks, but I'm not sure if lowered rails would let me use the bed divider.

 

Actually pretty easy. I just installed mine and it is super simple. To remove you just fold it up to the forward panel and just loosen two clamps attached to the bed rail and lift it off. Probably easier with two people, but still doable by yourself.