I've used multiple drop in trigger kits in my competition Glocks and have spend a considerable amount of money trying to find the best kit for competing in USPSA and IDPA. I've tried the big name companies like Glockworx and Vanek as well as multiple others. DK Custom is the best trigger kit I have ever tried and will ever use in my Glocks. I've won multiple State, Division, and high overall at major matches using a DK Custom Trigger. I highly recommend using their trigger.