Paintball

[HurtCow]

I think the rod between the bolt and hammer has some kind of spring thingy or something like that. If it's a solid rod, it doesn't have act.

[noelydeeznutz]

newer styles have a push sear setup (like the a-5)

*edit*
here is a pic of the new style sear


ACT models add a second spring right above the main drive spring