Spot Hogg Boonie Picatinny Mount Sight 2 Pin .019 RH Solid 6061 aluminum construction;Picatinny mount style;Silent and tool-less click-free adjustments;Micro-adjustable 2nd and 3rd axis;Removable knob for easy sight tape swapping and fine-tuning;Slotted lockdown screw holes;Quick disconnect feature;Pins: Two;Available in .010?, .019?, and .029? pin sizes for varied preferencestable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 1900 Product Group Code: 1900A Product Sub Group 1: 1900A2 Inactive: No