What is true about rifles or shotguns when handling evidence?

When handling rifles or shotguns as evidence, it is crucial that these firearms remain assembled. Keeping the firearm intact preserves important evidence that could be crucial to an investigation and eventual court proceedings. Assembling the weapon ensures that no parts are lost or misidentified, which could lead to questions about the integrity of the evidence.

Additionally, an assembled firearm can give investigators valuable context about how the weapon was used or involved in the incident under investigation. For example, an assembled weapon retains its full functionality and operational characteristics, which could be important when establishing the weapon's role in a crime.

Maintaining the firearm in its original state also helps law enforcement professionals comply with protocols and regulations related to evidence handling. This process minimizes alterations that could affect the case, ensuring that forensic analysis is accurate and reliable.

Other options such as disassembling the firearm for transport, draining ammunition, or cleaning it before submission could compromise the integrity and context of the evidence, making it less viable for analysis and courtroom presentation.