4-screw High 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 Rings 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