Geissele Super Semi-Automatic Enhanced (SSA-E) two-stage trigger. Brand new, sealed in original Geissele packaging. The SSA-E is Geissele's most popular trigger. 3.5 lb total pull weight with a light, crisp second stage break. Mil-Spec pins included. Drop-in installation with basic tools. This is THE trigger upgrade for any AR-15 platform. Used by military SOF units worldwide.