What is IFM?

IFM, or “Intentional Firearm Microstamping,” is when a firearm is internally imprinted with unique codes to the firing pin or breech of a semiautomatic/automatic gun. This intentional marking then transfers to cartridges when fired. These codes are unique to each firearm. This is done through laser micro-machining and enables law enforcement to track weapons used at the scene of a crime without having the physical firearm in possession.