A modern version of Niedner's shooting sticks used to be available from G T Glebe Co., Bryn Athyn, PA. They made their "Chuck-Stick" from a piece of drill rod with a padded aluminum casting providing the rest arm; a wooden knob was the handle for pressing it into the ground, then was losened to permit the rest to pivot and slide to the desired height on the shaft. Two thumb screws then held it.