Shadow firing pin

[Lead hammer]

So I just installed an extended firing pin from CZ, along with a reduced firing pin spring from CZ. I noticed the factory pin has a groove running lengthways, the new CZ one does not. I am assuming it does not matter, everything seems to move freely.

 

[Lead hammer]

Just to add some information for anybody searching.
The CGW reduced power firing pin spring does not fit a CZ firing pin. At least mine does not.

 

[Slavex]

the groove is for the firing pin block in the other guns if memory serves me right, interesting about the reduced spring not fitting on a regular firing pin though. Pics?

 

[Lead hammer]

the groove is for the firing pin block in the other guns if memory serves me right, interesting about the reduced spring not fitting on a regular firing pin though. Pics?

The OD of the firing pin is larger than the ID of the spring. You could really force it on if you hulked out, but then it would not be able to contract and expand.
If somebody could measure their CGW firing pin where the spring sits, we could compare the two pin's OD's.