The magpul esk (enhanced selector kit) offers a variety of selector levers for the magpul sl grip module and hk polymer trigger housings.The magpul esk results in a modular ambidextrous selector with enhanced ergonomics.It provides a modern rendition of the classic mp5 ssl with updated aesthetics.With easier access to the user-configurable levers the magpul esk allows quick firing hand activation and deactivation of the safety and provides for ambidextrous use.Made with high-strength polymer and corrosion-resistant steel.Compatible with three-position s-e-f and safe-semi trigger packs.Compatible with hk hk94 g3 93 91 sp5 sp5k and mp5.Made in the usa.Firearm Model: H&K 94/G3/93/91/SP5/SP5K/MP5Material: Polymer/SteelFinish: BlackPositions: 3