B3 Exact LINX Pro Picatinny Sight 4 Pin .019 LH 4-pin sight with .019" pin diameter;Machined aluminum construction for durability;Three-axis adjustments for precise tuning;Gear-driven elevation system with eight macro elevation locations;Micro-adjustable windage unit for fine-tuned accuracy;Programmable B3 light kit with 10 brightness settings and timer;Magnetic rotational sunshade for enhanced visibility control;Laser-engraved metal sight scales for clear adjustments;Multiple mount styles: dovetail, Bridge-Lock, and picatinny;Rapid travel and micro-adjust capability;Compatible with sight lights and lenses;Left-hand configuration;Includes rechargeable programmable sight light, magnetic sunshade, and engraved metal sight tapestable.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