how does an auoresponse frame work?

[la690]

i am curious as to how these fire once on the pull and once on the release. thanks.

[ChucktheMAGician]

There is a spring that hooks the bottom of the sear to the bottom of the frame. It makes the sear rock back and forth, on pull and release. Normally the sear only pivots when you pull the trigger. On an autoresponce frame it pivots agian when you release.

[la690]

no comprende