RINGS HARDENED STEEL 30MM 12MM MATTE BLACK Manufacturer Model Number: XRC3012S23 Manufacturer: Riton Optics Model: Ring Set Hardened Steel Type: Accessory-Rings/Mounts/Bases Item Type: Accessory Finish: Matte Weight: 7 oz. Shipping Weight: 0.55 Feature: Ring Set 12mm Feature: Fits Picatinny or Weaver Rail Feature: Hardened Steel Optic Maintube: 30mm Optic Adjustable Objective: false Optic Reticle Illuminated: false