This Tenebraex objective amber see-through flip cover provides protection for Leupold 40mm optics and flips out of the way when shooting. This product also includes an adapter ring to attach the flip cover to your riflescope. Fits the Following Leupold Scopes: Mark 4 LR/T 10x40Mark 4 LR/T 16x40Mark 4 LR/T 3.5-10x40Mark 4 LR/T 4.5-14x40Mark AR MOD 1 4-12x40Mark AR MOD 1 6-18x40VX. R 3-9x40VX. R 4-12x40VX-1 4-12x40VX-2 3-9x40VX-2 4-12x40VX-2 6-18x40VX-3/VX-3i 3.5-10X40VX-3/VX-3i 4.5-14X40VX-3/VX-3i 6.5-20X40 Tenebraex Amber Cover with Adapter Ring for 40mm Leupold Scopes- 40LTCC-ACR