Burris Universal dovetail 30mm standard ring pair, high, matte finish. This Burris Universal dovetail standard ring (420331) is quite a favorite of custom gun makers because of its strength, beauty and fit. It's easy to recognize Burris' leadership role in scope mounting systems when you consider the myriad of innovative designs and manufacturing processes that result in rock-solid performance. Each Burris ring is made from a solid piece of steel with the top and bottom half perfectly mated. Features: - standard rings - high - 30mm - fits Redfield leupold BRN & Millett mounts. Specifications: - style: Universal dovetail - tube diameter: 30mm - finish: matte