UTG Integral 1" High-pro QD Mount, 2 Top Slots, 130mm Base Robust and User Friendly Ergonomic Quick Detach/Lock Lever Fully Adjustable to Fit on Any Picatinny Rail Clever Posi-lock Crossbar Design and Spring Tension Controlled Locking Plate with Steel Insert Guarantees Most Secured Installation Tight Tolerance Control and Repeatable Positive Locking for Optimal Re-zero High Quality Synthetic Tape Applied on Ring Inner Surface for Scope and Mount Protection Ring Tops with Integral 1-slot Picatinny Rail for Flexible Mounting of Alternate Quick-aim Sight or Other Accessories