Alg-trigger-kp9 -

It offers an incredibly short and tactile reset, which is why users frequently joke that it "makes your round count deplete quickly".

Some users report constant light primer strikes. This is often solved by ensuring the main spring is properly seated or using the high-tension auxiliary spring provided by ALG. alg-trigger-kp9

Installing an ALG AKT trigger in a KP-9 is rarely a "drop-in" experience without minor fitting. It offers an incredibly short and tactile reset,

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. Installing an ALG AKT trigger in a KP-9

If you find the trigger for a defensive firearm, you can install the included auxiliary spring to increase the pull weight by about 0.5–1 lb, making it more predictable.