Gehmann 18mm Front Iris 2.9-4.9 w/ Bars

Gehmann 18mm Front Iris 2.9-4.9 w/ Bars

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 aperture preference changes. The horizontal level bars in the front sight are great for keeping a consistent tilt on the rifle.