Much better than the stock trigger. Easier and faster to pull.
I have the newer guard that does not go to the bottom line and I like the look very much.
After the initial install, the gun had runaway full auto. I took it apart, everythign looked OK, put it back together and it was fine.
Good upgrade. I like the feel and performance.
I gave it a 9 because of the runaway full auto thing. This may have been my fault, but I do not think so. I have taken the gun apart at least 10 times in the past two weeks and nothing like this has happened before.