The Geissele 2 Stage (G2S) trigger features a 4½ lb. total pull weight, non-adjustable sear engagement, and a 2½ lb. first stage. Made of the same tool steel as the SSA with wire-EDM cut engagement surfaces. G2S uses a different method to retain the hammer pin, different pins, and lacks laser marking. This is brand new, unused/has not been installed. -$155.00 Shipped VIA USPS Priority.