I bought one of these 2nd hand and its a bit on the heavy side, but works fine. The attachment to the QD stud requires a screwdriver but can be left attached and will take a sling with or without the bipod fitted. The bipod allows tilt (for uneven ground) and swivel. Legs are adjustable for height.

I also own a Caldwell bipod which I prefer to the JSR Pro, its lighter (some plastic bits), clips on without a screwdriver, tilts and swivels, has adjustable legs too.