From two different internet sites:
"Trigger Pull- DA/SA 12.1lbs/4.4lbs"
"The Mosquito’s double-action trigger pull weight is 13 pounds, 8 ounces, and single action is 6 pounds, 4 ounces."
At any rate it's a lot more trigger pull than most people are used to. I shoot a lot of double action only, so I like the fact that I can go single action. I still really like the Mosquito but I might like it even more if I could reduce the weight on the trigger.