Despite its popularity, there are three main issues that frequently pop up in the community:
Are you planning to install one yourself, or are you an existing setup? alg-trigger-kp9
The most famous part of the story. Most KP-9 users must install the included roll pin into the trigger tail and file it down until the safety can just barely engage. Despite its popularity, there are three main issues
You often need to squeeze the trigger while rotating the safety lever back into position during the initial install. Despite its popularity