Geissele SSA-X Lightning Bow 2-Stage Trigger (05-959) is a precision-engineered two-stage trigger for AR-15 and AR-10 platforms, featuring Geissele’s non-adjustable Lightning Bow® trigger shoe for improved ergonomics and control. With Nanoweapon® coating on the trigger body and hammer and a chrome nitride disconnect, it delivers ultra-smooth pull and enhanced corrosion resistance even with minimal lubrication. Platform: AR-15 / AR-10 Trigger type: Two-stage, non-adjustable Trigger bow: Lightning Bow® (hybrid curved/flat) Pin size: Mil-Spec Made in the USA Geissele Automatics Geissele SSA-X 2-Stage Trigger w/Lightning Bow 05-959