Love mine. No rounds through it yet, but with the 3# spring, it feels great.
I heard (even in this thread) that there were some light primer strike issues with the 3lb spring. HBI, when asked about it, says in the comments section of their install tutorial video on YouTube that they experienced issues with that spring. It might feel great but won't perform great. This is my issue when looking for a reliable edc.
They claim the 3.5lb is 100% reliable but the change in trigger pull weight is a wash so why even risk it? I don't know if I'm overreacting.. since the trigger bar, disconnector and striker spring geometry all remain the HBI shouldn't really effect reliability?