Installed easily and you have your choice of using it in finger mode or grip mode. Used it in finger mode for a week until the flex arrived. Have it mounted on a ruger sr9c. Once I installed the flex I placed the GTO into grip activation mode and has been flawless. It's pretty cool.
Pros: Turns on by grip instead of pushing a switch
Cons: None yet but will follow up after more use
This review was written in the old system and had content requirements that are different than reviews written today.