Final answer:
The make of a firearm for entry into the NCIC should be sourced from the manufacturer's designation for civilian and foreign military weapons, while US military issued firearms have their make listed under US military-specific criteria.
Step-by-step explanation:
The make of a firearm, when being entered for identification in the National Crime Information Center (NCIC) system, should be taken from the manufacturer's designation for all civilian and foreign military weapons.
The make of a firearm for entry into the NCIC should be sourced from the manufacturer's designation for civilian and foreign military weapons, while US military issued firearms have their make listed under US military-specific criteria.
However, for US military issued weapons, the make of the firearm is listed under different criteria because they are standardized by the US military itself. The correct make information for these firearms can usually be found within US military-specific documentation or databases.