Crow#21957
50 Cal.
Best thing about this one is it looks PC on most guns imo. The handy thing is I can go from ghost ring to any size arpeture.When installing arpeture I just slide the arpeture into the ghost ring then roll a small o ring over the part of the arpeture that is protruding out the front of the sight.The last pic#4 is a much better veiw Tap to enlarge.Pic#1 the two dots on the base is where I staked the sight in place on a rifle. I use a small center punch.