UTG 30mm/2PCs Low Pro LE Grade Picatinny QD Rings: 22mm Wide 4-screw Low 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