Nuoya001 25.4mm 1" 30mm Ring 20mm Weaver Barrel Mount Rail Adapter for Scope Flashlight
100% newThis item Ring Diameter is can adjust 25.4mm(1 inch) and 30mm Ring models!if you need 25.4mm ring, you only add the pad for the ring !if you need 30mm ring, you only remove the  pad for the ring !