Rear Bed Slide Fifth-Wheels?

Wondering if anyone has, or knows of manufacturers that have made or may still make a fifth-wheel with the rear bed slide - as in the slide that comes out the back of the trailer. I believe K-Z made one in the late 90's/early 2000's. We have a large fifth-wheel that we will keep, but are looking for a smaller unit for use while traveling and in more primitive camping situations.

We're looking for the hard side slide types and not the hybrid models with pop-up type beds.