Revolver's firing lever (7)
I believe the answer is:
trigger
(Other definitions for trigger that I've seen before include "prompt" , "Set in motion - say gunfire" , "Start" , "Cause (device) to operate" , "Gun release mechanism" .)
I believe the answer is:
trigger
(Other definitions for trigger that I've seen before include "prompt" , "Set in motion - say gunfire" , "Start" , "Cause (device) to operate" , "Gun release mechanism" .)