Awesome trigger - Fostech Echo AR-II Drop-In Binary AR-15 Trigger

I bought this about a year ago and i love it will definitely be using it in future builds. I did do the spring change to reduce trigger pull weight. I haven't had any problems with it. I suggest taping it with Scotch tape as soon as you pull it out the box so it doesn't fly apart only go around once so you can take it off when you're putting it in the lower receiver.