I got this tool from an old estate. I have no idea what it was used for. The tool measures 10” long. The end is a cutter pliers tool with a area in the middle cut out (made original that way). The end spirals out another 5 ¼”. At first I thought it was just a pair of pliers and someone welded the extra piece on it. Upon further inspection, there is a catch on the pliers handle that is original to the tool. The catch locks by pulling back the piece on the center shaft with the holes in it. There is a spring in the square part that holds it in place. The center bullet looking piece has a hole in the end. The only markings on it, besides the dudes initials is the M and 3 as shown. If the end was a plunger and not a spiral I would guess some sort of grease gun attachment.
Thanks for your help!!!