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.

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. alg-trigger-kp9

It is widely considered the best upgrade for competitive shooting or rapid-fire "mag dumps" due to its hair-trigger nature. ⚠️ Known Plot Twists (Troubleshooting) There has been historical debate about the harder