Auto Sear

From Wikipedia, the free encyclopedia

An auto sear is a part of an automatic firearm (designated "machine gun" by the BATFE, any firearm capable of firing more than one round with a single operation of the trigger mechanism) that holds the hammer in the cocked position while the bolt of the weapon is cycling. An auto sear is required in nearly every automatic rifle, especially assault rifles.


This firearms-related article is a stub. You can help by expanding it