Atlas sure shot monopod- worth the money - Accu-Shot Precision Rail Mount Monopod

Bought this for my Ruger RPR and couldn't be happier. Took seconds to install and fits/functions perfectly. Large adjustments made by the button which allows you to bypass the threads and extend the pod. Fine adjustments made by turning the pod incrementally. Quality piece. If you plan to shoot off of concrete, get the Police model with the steel ball on the end, otherwise, the model with the " Teflon" ball is perfect.