Vortex Tactical 30mm High Scope Ring - Matte Black - This robust 6-screw Tactical 30mm Ring is perfect for mounting red dot optics, magnifiers and other accessories with 30mm tube diameters to your Picatinny rail. When using this ring to mount a conventional riflescope, we strongly recommend lapping the rings for a proper and secure fit for your optic. Fits these Riflescopes: RAZOR HD GEN II RZR-16003 RZR-16004 RZR-16005 RAZOR HD LH RZR-6638 VIPER PST PST-14ST-A PST-14ST-M VIPER PST GEN II PST-1605 PST-1607 STRIKE EAGLE SE-1624-1 SE-1824-1 DIAMONDBACK DBK-07-BDC DBK-08-BDC DBK-RIM DIAMONDBACK HP DBK-10011 CROSSFIRE II CF2-31001 CF2-31001R CF2-31002 CF2-31003 CF2-31037