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Gehmann 18mm Thread Front Sight Iris 2.9-4.9

$ 137.95
This front iris fits the 18mm front sight and adjusts from 2.9 to 4.9 with just an easy turn. Adjustment helps when there are light changes, sight radius changes between positions, or apeture preference changes. The horizontal level bars in the front sight are great for keeping a consistant tilt on the rifle.