I'm going to show my lack of edumication on these.... what's with the dual triggers??
Double set triggers.
When the rear trigger is cocked, it transforms the front trigger to a hair trigger. Got an adjustment screw between both triggers that allows a VERY light touch. My 22 hornet is a breath close of going off when the back trigger is cocked. Don't have anything to measure but it is close to nothing. Bought it that way but might change it a bit when I'll try it. Not ideal for hunting but for target shooting...
You can always use the front trigger alone without pulling the rear one but its really a hard pull.