This Tenebraex ocular flip cover provides protection to your lens and flips up out of the way when it is time to shoot and includes an adapter ring. Fits the Following Bushnell Scopes: DMR 3.5-21x50mmElite Tactical 3.5-21x50mmElite Tactical 4.5-30x50mmERS 3.5-21x50mmHDMR 3.5-21x50mmXRS 4.5-30x50mmFits the Following GPO Scopes: Passion 4 6-24x50 CCWPassion 4 6-24x50 CWPassion 5x 1-5x24iFits the Following US Optics Scopes: ER-25LR-17MR-10SR-8 1-8x27Fits the Following Vortex Scopes: Crossfire II 2-7x32Crossfire II 3-9x40Crossfire II 3-9x50Crossfire II 4-12x40Crossfire II 4-12x44Crossfire II 4-12x50Razor HD LH 1.5-8x32Razor HD LH 2-10x40Razor HD LH 3-15x42Strike Eagle 1-6x24Strike Eagle 1-8x24Fits the Following Zeiss Scopes: Conquest 1.8-5.5X38Conquest 3.5-10x44Conquest 3.5-10x50Conquest 3-15x42Conquest 3-9x40Conquest 3-9x50Conquest 4.5-14x44Conquest 4.5-14x50Conquest 6.5-20x50Conquest DL 1.2-5x36Conquest HD5 2-10x42Conquest HD5 3-15x50Other Fits: Hawke Sidewinder 4-16x50, Vantage 2.5-10x50Hensoldt ZF 3-12x56Leupold Mark 6 3-18x44 M5B2Nightforce SHV 5-20x56Schmidt & Bender 2.5-10x40 SummitSightron S-Tac 2-10x32, 4-20x50Trijicon AccuPoint 1-6x24 Tenebraex Ocular Flip Cover w/ Adapter Ring UAC002-FCR