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.
Installing an ALG AKT trigger in a KP-9 is rarely a "drop-in" experience without minor fitting. alg-trigger-kp9
Pull weight often drops from a factory ~5 lbs to a crisp 2–2.5 lbs . There has been historical debate about the harder
You often need to squeeze the trigger while rotating the safety lever back into position during the initial install. You often need to squeeze the trigger while
The "complete story" of the (specifically the AKT-EL or AKT-UL ) in the Kalashnikov USA KP-9 is one of the most popular performance upgrades for the platform, but it involves specific installation quirks and common troubleshooting steps. 🛠️ The Installation Journey
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.
Are you planning to install one yourself, or are you an existing setup?