I looked these up and it's the first time I've seen a truly new design for a Glock so I ordered it (first time paying full price for an aftermarket trigger). It came today FedEx and I initially installed it into a G17 Gen3 cutaway so I could observe the inner workings. My cutaway had a minus connector in it and I left it that way.
I think the idea is ingenious but as an armorer, I'm having some issues with it.
1) The only forward pressure on the trigger is the small wire spring that gets installed next to the slide stop lever. What I noticed was if I put very slight pressure on the trigger then released it - it stayed towards the rear with the firing pin safety in a disarmed state. So 2 of the 3 Glock safeties are disarmed and did not reset when I took my finger off the trigger.
2) The unit that has the lug which holds the firing pin to the rear is entirely dependent upon it's own spring to keep the firing pin from releasing. This would make the Glock drop safety irrelevant. The only thing ensuring the firing pin does not release is the trigger system's own spring.
Taken together, the gun could be potentially unsafe. The trigger can be in a position that disarms the trigger safety and firing pin safety and the system doesn't use the drop safety, all it would need is a good jolt opposite the TMH unit to fire the gun. A little disconcerting for something promoted by Shane Coley. I'll try to reach out to Timney this weekend and see what they say. I also need to put it in one of my other Glocks to ensure the issue repeats.
As far as the feel of the trigger - definitely going to have to use a standard connector. With the minus connector I got an average trigger pull of 2lbs 5oz - that's insanely light (too light in my opinion) for a Glock. I can't feel any wall. I don't fault the trigger for that, I just think it's the wrong combination. Somewhere I have a Ghost Angel connector - it also has no wall, I'll have to try that also just to see how insane it gets. I'll also test a + connector to see how it feels but I think the standard connector is what this is really designed for.
I don't see any way this should be used for a SD gun given that it negates one of Glock's safeties even if I hadn't experience the first issue. I want to test it more before making my mind up about it for competition/range toy.