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.Finish: BlackType: TriggerModel: SD-ESize: Mil-SpecMaterial: Steel