What should never be submitted to the laboratory regarding firearms?

Submitting a loaded gun to the laboratory is not appropriate due to safety concerns and protocol standards. Laboratories that conduct firearms analysis must maintain strict safety procedures to prevent accidents. A loaded firearm poses a significant risk to personnel handling it, as there could be unintended discharge while being processed.

In contrast, unfired cartridges may be relevant for ballistics testing, and a gun with the safety mechanism engaged, while also posing risks, is typically considered safer than a loaded firearm. A firearm with its magazine removed is usually handled with the understanding that it can be safely examined as long as the chamber is cleared as well. The proper procedure is to ensure all firearms submitted for analysis are unloaded to maintain a safe working environment and adhere to laboratory standards.