The Auto Flag was developed with the competition shooter in mind. Whether you’re at the line or just having fun at the range, removing and inserting a traditional chamber indicator can be a pain especially with rifles. The auto flag inserts like a standard magazine. When the bolt is moved rearward the Auto Flag Bolt block will pop up into place, locking the bolt open and providing a visual indicator that blocks the chamber. Removal is just as simple like a standard magazine simply depress your magazine release and pull on the bottom of the Auto Flag empty chamber indicator to remove it.