Cheek Piece for Feinwerkbau

565 Iris with both Six-Color and Twin Polarization Filters (Black) – Two polarization filters: First ring eliminates and controls white round targets. Second Ring (with stainless lugs) controls light through the sight and enables degrees of brightness. – 10-90 % light absorption via the twin polarizes. – Filters are of the highest quality optically flat glass in colors: – Yellow, green, brown, light grey, dark grey, and orange – Can be used as an iris only – or with one color and/or polarization filters.