I am extremely happy with my new combat trigger. This was my first installation, but I followed along step by step with Johnny's YouTube tutorial. Had an issue with over travel initially, but it was addressed in the video and instruction card. It ended up being a fairly easy trouble shoot, and taught me how to adjust the trigger myself.
Took it straight to the range after for a test run. Zero malfunctions.
Highly recommend, and I'm sure I'll be picking up another at some point.