The Magpul ESK (Enhanced Selector Kit) offers a variety of selector levers for the MagpulA(R) SL Grip Module & HKA(R) Polymer Trigger Housings. Keeping with the Magpul blueprint of innovation, the MagpulA(R) ESK results in a modular, ambidextrous selector with enhanced ergonomics. With easier access to the user-configurable levers, the MagpulA(R) ESK allows firing hand activation and deactivation of the safety, while providing ambidextrous use. Constructed of our high-strength polymer and corrosion-resistant steel, these components are built with the proven reliability Magpul is known for. User-configurable levers for ambidextrous use Easier firing hand a Mfg: Magpul