This Tenebraex Amber Objective flip cover provides protection to your lens and flips up out of the way when it is time to shoot. Fits the Following ELCAN Scopes: Specter DR 1.5x/6xSpecter DR 1.5x/6x Dark EarthFits the Following Vortex Scopes: Razor HD Gen II 3-18x50Viper PST 2.5-10x44Viper PST 4-16x44Viper PST 4-16x50Viper PST 6-24x50Fits the Following Swarovski Scopes: X5 3.5-18x50 PX5i 3.5-18x50 PZ3 4-12x50Z5 3.5-18x44 PZ6 2.5-15x44 PZ6 2-12x50Z6 3-18x50 PZ6 5-30x50 PZ6i 2.5-15x44 PZ6i 2-12x50Z6i 3-18x50 PZ6i 5-30x50 PZ8i 2-16x50 POther Fits: Leica Magnus 1.5-10x42Nightforce ATACR 4-16x50Steiner T5Xi 3-15x50Tangent Theta 3-15x50US Optics LR-17 Tenebraex Amber Objective Flip Cover 50MMFC-ACV