The Geissele Super Dynamic-Enhanced (SD-E) Trigger featuring an exclusive flat trigger bow, is a finely-tuned two stage trigger providing enhanced trigger control and weapon accuracy while maintaining the robustness and reliability of Geissele combat-proven two-stage trigger. The SD-E is ideal foruse in precision Squad Designated Marksman type rifles where weapon accuracy and reliability are critical.Specifications and Features:Type: TriggerModel: SD-ESize: Mil-SpecMaterial: SteelFinish: Black