I’ve been running the Striker Control Device from Tau Development Group for the last few years.
I think that if you’re carrying a Glock pistol it’s an invaluable addition, especially if you’re carrying appendix.
The idea behind “The Gadget,” as it’s known, is that a shooter can now “thumb the hammer” during re-holster, as they would with a traditional double action gun.
After playing around with it, I discovered that, for me at least, there was one very specific consideration that I had to factor into my re-holstering procedure.
The pad of my thumb didn’t provide sufficient resistance against the backplate of the Gadget and the pistol could still discharge with sufficient pressure on the trigger.
So, when putting the gun away, I make sure I’m pressing with the TIP of my thumb, with the fingernail perpendicular to the backplate instead of parallel.
If you don’t have one already, you really should.
If you do, I encourage you to play around with it and see if this is something you want to work into your process.