Only issue with the Rock BR Rest is the Plastic Wheel and shaft that locks the vertical adjustment wheel likes to come loose, often. I ended up having to modify mine to get it to quit doing that as you can't get a good enough crank on the 1.5" plastic wheel to get the thing really tight. It is too close to the bottom of the top rest. Needs a longer shaft and a T handle but interim you can run the wheel against it to hold it tight. Other than that, pretty good rest for the dollars.
The shaft and knob that lock the fine elevation setting is the one I am referring to.
Shaft and Knob just below the large diameter black fine elevation adjusting wheel.
