I have this used Knight's rail P/N 23128 that I need to find a wrench to adjust and install on a carbine. I looked on the Knights Armament website and it does not appear to be listed there for sale. I figured I would ask the experts here before I give Knights a call tomorrow. Any idea where I can find this wrench/tool for sale? If not the Knights Armament specific tool, what have any of you used to adjust this rail? Any information would be great. I have attached a picture of the rail.