• 4-screw Medium Profile "Tiger" Ring • Precision Machined From Aircraft-grade Aluminum Alloy with Anodized Black Matte Finish • Robust and User Friendly Ergonomic Quick Detach/Lock Lever Fully Adjustable to Fit on Any Picatinny Rail • High Quality Synthetic Protective Tape Applied on Ring's Internal Surface • Tight Tolerance Control and Repeatable Positive Locking for Optimal Re-zero Performance • Extensively Field Tested under Extreme Operations and Well Received by Field Experts and Law Enforcement Personnel