When there is more than one number on a weapon, which number should be inquired about first?

The first number to inquire about when there is more than one number on a weapon is the frame number. This is because the frame number is often considered the primary identifying number for a firearm. It typically represents the core structure of the weapon and is associated with the firearm's legal registration.

The frame number can provide crucial information regarding the weapon's make and model, ownership history, and its status within legal databases. It's important to start with the frame number to ensure a precise identification and to gather relevant legal information related to the firearm. Using the frame number as the starting point helps law enforcement and regulatory bodies ensure they are addressing the frame itself, which is often critical in the context of firearms regulations and safety.