When you do a trigger job using the JP reduced power springs you need to remove "mass" from the hammer.

The stock hammer spring works well with the stock hammer but we are no longer using the stock hammer spring.

We are now asking a "reduced" power spring to move the same "mass" as the stock spring.

This is where we run into trouble with "light strikes". The hammer never achieves full power to make a reliable strike.

So to overcome this, we must reduce the "mass" we are trying to move. So, by reducing the "mass" of the hammer we get it moving much faster and with a much more powerful "strike" resulting in reliable primer ignition using a reduced power spring.

What we are looking for is a relationship between parts that produce a lighter trigger pull and reliable ignition. This modification achieves this.

Counting the rounds I fired this past weekend, I have put well over 2000 rounds on this trigger and hammer and it has been flawless.

Stay safe and God bless.