The Williams Fire Sight dots are too small for me to focus (mid 60's eyes) on a gobblers head so they are coming off my H & K Import, M1 Super 90, Montefeltro 20 gauge. I want to replace the original screw in sight with a larger diameter red or green dot to aim. This bbl is 24" long and has a vent rib with a middle bead and the factory Benelli red "tube type" screw in front sight.
I have read that the older Benelli's use a metric thread 2.5x .45, but I don't know if this is true.
Would someone Please confirm what size thread is in this older Monte for me?
Once I determine the thread size, I need to pick out a larger diameter "Bead" to be able to aim. So I am assuming that my options may be limited if the factory thread is metric.
