What action should police never take when preparing a firearm for evidence submission?

When preparing a firearm for evidence submission, attempting to fire the gun is a critical action that police must never take. This is because firing the firearm can compromise the integrity of the evidence. It may alter or destroy potential ballistic evidence that could be crucial for investigations and prosecutions. Furthermore, firing a weapon that may be involved in a crime presents unnecessary risks to safety and can lead to legal issues surrounding evidence collection practices.

In contrast, marking the firearm with its serial number is a standard procedure for identification and tracking purposes, ensuring that the evidence can be properly cataloged. Packaging the firearm securely is essential to preserve the evidence and prevent any contamination or damage during transportation. Delivering the firearm in person allows law enforcement to maintain a chain of custody, ensuring the evidence remains secure and is properly logged. Each of these actions is aligned with best practices for evidence handling, reinforcing the importance of maintaining the integrity of the evidence during the investigative process.