What mechanism does a trigger lock serve?

A trigger lock is a safety device specifically designed to prevent accidental discharges of a firearm. It accomplishes this by physically blocking the trigger, which means that even if someone tries to pull the trigger, the lock prevents it from moving. This mechanism is essential for promoting safe firearm storage, especially in households with children or individuals who may not be trained in gun safety.

In contrast, the other options do not align with the primary function of a trigger lock. Enhancing the power of a firearm or improving aim when shooting are related to the firearm’s design and handling techniques, not to safety mechanisms. While protecting the gun from theft can be a consideration in overall firearm security (potentially involving locks or safes), it is not the direct purpose of a trigger lock, which focuses solely on preventing an unintended trigger pull and ensuring that the firearm remains safely stored when not in use.