What precaution should be taken with a firearm that lacks a data stamp?

Visiting a gunsmith for measurement is a crucial precaution for a firearm that lacks a data stamp. The absence of a data stamp indicates that the firearm's specific details—such as its model, caliber, or production date—are unknown. A gunsmith can help determine these essential characteristics, which are vital for assessing the firearm's safety, legality, and compatibility with ammunition types. Understanding these specifications can also assist in performing proper maintenance and ensuring the firearm operates safely.

Ensuring the firearm is measured and inspected by a professional is especially important for safety reasons. Firearms that lack proper identification may have unknown origins or may not meet legal requirements, making it imperative to consult an expert for an evaluation. This step is fundamental in verifying the firearm's status, which can affect how it is handled and stored.

In contrast, cleaning the firearm thoroughly or storing it away from other firearms does not address the fundamental concern of the lack of identifiable information. Keeping it loaded for safety is risky and not a recommended practice, as it increases the likelihood of accidental discharges and does not mitigate the problem of unknown specifications.