The Leupold Mark 4 30mm Medium Aluminum Scope Rings (model Mark 4 / 57398) are precision-machined two-piece mounts intended for securely attaching optics with a 30mm main tube to Picatinny-style rails and Leupold PRW bases. These rings are produced from aircraft-grade aluminum and finished in matte black for a utilitarian, low-reflective profile. The medium height provides a balanced sightline for many rifles and optics while maintaining a compact footprint. Hardware options included with the rings support higher-recoil applications and durable attachment to compatible bases.
Key Specifications
- Machined from aircraft-grade aluminum for precision tolerances.
- Finished in matte black for reduced glare.
- Designed for a 30mm main tube.
- Offered in a 30mm Medium height.
- Identified as model Mark 4.
- Two-piece design compatible with Picatinny-style rails and Leupold PRW bases.
- Includes both 6-48 and 8-40 shoulder screws to accommodate high-recoil applications.
- Equipped with strong 1/2 in. keeper nuts to lock the rings solidly to the base or rail.
Built to deliver repeatable alignment and long-term durability, these Mark 4 rings provide a stable, low-profile platform for target, precision, and tactical optics. Their precision machining and robust hardware make them a dependable choice for shooters who prioritize consistent optic mounting and straightforward functionality.
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