Kuduae,

Is that a Lyman cocking piece sight, and if so, was it already there or did you install it? I have one I would like to install on one of my M/S rifles, but I lack the special "nut" that Lyman used to sell with the pre-cut dovetail. I suppose I could braze an extension onto the nut and attach the sight to it, but I would prefer not to, if there is an alternative.