The Geissele Super Dynamic-Enhanced (SD-E) Trigger is the perfect upgrade accessory for your AR. Featuring a two-stage trigger, the Geissele Super Dynamic-Enhanced (SD-E) Trigger provides control and weapon accuracy that helps maintains reliability. Buy this Geissele Super Dynamic-Enhanced (SD-E) Trigger at a great price right here on OpticsPlanet. Please note, these triggers are designed for mil-spec AR15/M4 carbine rifles. AR15 triggers are not compatible with the Sig MPX/MCX weapons or Pistol Caliber Carbine AR15/M4 variants. Using them in these platforms will void the warranty. Specifications for Geissele Super Dynamic AR-10/AR-15 Enhanced Trigger: Manufacturer: Geissele Color: Black Trigger Shape: Tactical Flat Trigger Material: Tool Steel Trigger Pull Weight: 3.5 lb Trigger Pin Size: Mil-Spec Hand: Ambidextrous Gun Make: AR Platform Gun Model: AR-10, AR-15 Gun Type: Rifle Included Accessories: Standard Condition: New Package Contents: Geissele AR-10/AR-15 Super Dynamic Enhanced (SDE) Trigger The Geissele AR-10/AR-15 Super Dynamic Enhanced (SDE) Trigger is a quality addition to the Geissele lineup. For more great deals on Rifle Triggers by Geissele, please browse our Geissele Gun Parts page.