The restriction of fifth-generation Glock pistols in California stems primarily from the state’s Roster of Handguns Certified for Sale, often referred to as the “Handgun Roster.” This roster, maintained by the California Department of Justice, dictates which handguns can be sold by licensed dealers to the public. To be added to the roster, a handgun must meet specific criteria, including passing drop safety tests and incorporating a microstamping mechanism. The requirement for microstamping, which involves a technology that imprints a unique identifier onto each cartridge case when the firearm is discharged, has presented a significant hurdle for manufacturers.
The microstamping mandate, enacted in 2007, has proven particularly problematic. No manufacturer has yet implemented microstamping technology on a commercially viable scale that meets California’s requirements. Furthermore, some argue that the technology is unreliable and easily circumvented. Because Glock has not incorporated this feature into its Gen 5 pistols, they do not comply with California’s handgun roster requirements. This inability to meet the microstamping standard effectively prevents the sale of these newer Glock models by licensed dealers within the state.