Jefftron M4 Speed CNC Trigger (Red)CNC hair trigger for M4 M16 series Thanks to adjustable zero position by screw, shot can be made by very short trigger pull Intended for Leviathan V2, can also be used with other electronic device which doesn't require mechanical trigger blocation in safe position CNC manufacturing from aluminium 7075 Secure position the screw by glue Warning: the mechanical lock with this trigger does not work in the safe position Package contents: Speed CNC red