The Warne Mfg 1BM: Maxima Grooved Receiver Line has been meticulously designed to accommodate the need for scope mounts on rifles integrated with a receiver mounting rail. Given that each manufacturer conventionally has their own unique mounting rail design, each ring model is manufactured to precise tolerances to ensure perfect fit and function.The Maxima Grooved Receiver line perfectly serves that purpose. Warne rings, precision-fashioned through CNC machining, provide unparalleled strength, durability, and quality. They are versatile, fitting a range of rifle models that includes but is not limited to the CZ 527 and other 16mm Dovetail Receivers, and the CZ 550 and other 19mm Dovetail Receivers. Options are available in both 1\" and 30mm sizes.