Ruger 90321 Scope Rings 30mm Medium Height Matte Black Steel

The Ruger 90321 4B30HM scope rings deliver secure optic mounting for medium-height scope installations on Ruger rifles. These steel rings feature a matte black finish that eliminates glare while providing corrosion resistance for extended field use.

What Makes This Different

Ruger's proprietary ring design incorporates precision-machined steel construction with a four-screw cap system that distributes clamping force evenly across the scope tube. The medium height configuration provides 0.87-inch clearance from the base to scope centerline, accommodating most standard objective lens diameters while maintaining a low profile. Unlike generic rings that may require lapping, these rings are manufactured to tight tolerances that typically eliminate the need for additional fitting.

Key Features

• 30mm tube diameter fits popular tactical and hunting scopes
• Medium height (0.87" center height) clears most objective lenses
• Four-screw cap design distributes stress evenly on scope tube
• Precision-machined steel construction resists deformation under recoil
• Matte black finish reduces reflection and resists corrosion
• Compatible with Ruger American Rifle and other Ruger bolt-action models
• Torx screws provide secure fastening with proper torque application

These rings handle the recoil forces generated by magnum cartridges while maintaining zero retention shot after shot. The steel construction proves essential for high-recoil applications where aluminum rings might shift or deform. Hunters appreciate the corrosion-resistant finish that withstands moisture exposure during extended hunts, while competitive shooters rely on the consistent return-to-zero performance.

Technical Specs

• Ring diameter: 30mm
• Height: Medium (0.87" center height)
• Material: Steel construction
• Finish: Matte black
• Mounting system: Four-screw cap design
• Compatibility: Ruger integral scope mounts
• Fasteners: Torx head screws
• Model number: 90321 (4B30HM)

Ruger's engineering ensures these rings maintain scope alignment under the stress of repeated firing cycles. The medium height strikes the optimal balance between objective lens clearance and maintaining a natural cheek weld position.