Ruger 4B30HM 30mm Medium Matte Black Scope Ring

The Ruger 4B30HM is a single matte black steel scope ring for mounting a 30mm scope tube to a Ruger 10/22 rimfire rifle. It is a medium-height ring designed to accept scope tubes up to 42mm in diameter.

The ring is made of steel with a matte black finish. It is sold as a single ring, so a complete mount requires two rings. The raw listing also notes that a #3 and #4 pairing is low-set, #4 and #5 is medium, and #5 and #6 is high for Super Redhawk applications, but this ring is listed for the 10/22 platform.

• Brand: Ruger
• Model: 4B30HM Standard Medium
• Platform: Ruger 10/22
• Tube Diameter: 30mm
• Maximum Scope Tube Size: 42mm
• Height: Medium
• Material: Steel
• Finish: Matte Black