What is the significance of a "bullet button"?

The significance of a "bullet button" lies in its functionality related to compliance with California firearm laws, particularly concerning detachable magazines. This device allows for the removal of a magazine from a firearm using a tool, typically a bullet or similar object, rather than by hand. This modification is designed to circumvent certain restrictions on the ownership and operation of semi-automatic rifles.

In California, firearms classified as assault weapons are subject to strict regulations, including restrictions on the use of detachable magazines. The bullet button serves as a workaround by making it more difficult to quickly detach a magazine without using a tool, which helps firearm owners comply with state law. Thus, this option accurately reflects the primary purpose and significance of a bullet button regarding magazine removal in firearms.