Geissele Automatics 05-157 Super Scar M4 Curved AR Style Mil-Spec Steel Black Oxide 4 Lbs The Super Scar Is a 4.0Lb. Non-Adjustable Combat Two-Stage Trigger That Allows Precise And Accurate Trigger Control. Type: Trigger Model: AR Style Size: Mil-Spec Material: Steel Trigger: Two Stage Finish: Black Oxide