Advanced CNC aluminum speed trigger (E style) is specially designed for quick response, smooth and consistent trigger pull on the ver. 2 AEG M4/M16 Series Airsoft Rifle Gear Box.The Advanced Speed Trigger features multiple adjustment points to control pre-travel and over-travel to reduce trigger pull and prevent damage to electronic switches on controller boards.< br>The Advanced Speed Trigger is fully compatible with Gate's popular TITAN™ electronic module for ver. 2 gear boxes.The Advanced Speed Trigger is designed with exhaust cuts to work in most Tokyo Marui (TM) specifications. AEG and HPA systems.The main trigger pin is made of titanium for maximum strength and durability.The trigger body is CNC machined from a solid block of aircraft-grade aluminum.Aluminum construction and titanium makes this trigger very light and durable. In addition, the trigger is carefully beveled at the edges and securely fitted with three rubber pads to ensure comfort, improve traction and a secure grip. With unique shapes, design elegant and colors, we will have an option to meet your style needs.***To convince users that the trigger spring is included.