Got mine in today and installed within 10 minutes. One thing I noticed, the roll pin did NOT want to go in. I had to press it in with a bench vise, then finish it off with a few solid taps. I was questioning if I was doing it right at first
After getting it back together I played with it for a bit. The pull does feel better, will take me a little while to get used to the sharp edges of the flat trigger but I like it. Definitely better than stock. I think HBI would be wise to get rid of the 90 degree angle on the front of the trigger. just to make it feel slightly smoother at the point of contact.
That said, fit and finish is as expected from any top company.
Good product and good job!