UTG 30mm/Single PC Hi-pro Picatinny QD Ring, 25mm Wide Single Piece 30mm Picatinny Ring Mount with 1" Saddle Height to Provide a Co-witness Option for Many Popular Magnifier or Dot Sight Models Precision Machined From Aircraft-grade Aluminum Alloy with Anodized Black Matte Finish, High Quality Synthetic Protective Tape on the Inside Patented, User Friendly Ergonomic Quick Detach/Lock Lever Fully Adjustable to Fit on Any Picatinny Rail Tight Tolerance Control and Repeatable Positive Locking for Optimal Re-zero Performance Purchase 2 Units to Mount a Conventional Scope with Up to 80mm Objective Diameter and Proper Tube Clearance for the 25mm Ring Width