striker fired??

[Walkalong]

A double action gun was referred to as such because there were two (double) methods: from a hammer cocked position or a hammer down.

I've never heard that before. Ever.

In his defense, I remember being told that when I was a young man, but heck, those same folks called mags clips too.

What did I know?

 

[Zerodefect]

Cliff notes version:

Hammer fired= hammer pounds on the fireing pin slamming it into the primer.
Striker fired= spring on fireing pin "sling shots" the fireing pin into the primer.