Alg-trigger-kp9

There has been historical debate about the harder ALG hammer "peening" (deforming) the rear of the bolt carrier over thousands of rounds, leading some users to polish or "profile" the hammer face to match the factory geometry.

Despite its popularity, there are three main issues that frequently pop up in the community: 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. There has been historical debate about the harder

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

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.