I recently installed the ALG defense ACT trigger in my AR and I'm really enjoying it so far.
What it came with:
The kit comes with two springs and pins for the hammer, one that is for a 4 1/2 pound spring and the other that is rated at 6 pounds. The trigger, hammer, and dis-connector are all coated and rounded off nicely.
What I'm using as far as springs:
I currently have the purple (4 1/2 pound) spring in and I was really surprised by the difference.
Comparing it to other triggers:
I have only ever shot either brand new or well worn mil spec triggers (the m4 I had on my first trip down range had been in Fallujah and was pretty nice). This trigger blows them out of the water. The take up is very clean and I can actually just roll through it slowly and deliberately, almost like rolling through the Glock trigger. The reset is a little different and if your used to the strong reset of the mil-spec spring its going to take a little to get used to. After about 10 dry fires I had it figured out and it was honestly just a mental thing since it travels the same distance as the original trigger/spring.
If anyone wants me to make a video of the take up and reset let me know..