A 'Glock switch' is a small (often described as Lego-sized) device that can be 3-D printed to modify a Glock pistol so it fires in a fully automatic mode.
October 13, 2025
high
definition
Describes the conversion device commonly referred to as a 'Glock switch'.
Glock pistols are designed to be modular and customizable, which allows users to change or add components and aftermarket parts.
October 13, 2025
high
design
Describes a general design characteristic of Glock handguns noted in reporting.
Some newer Glock models include a factory-added component intended to block or interfere with the function of a 'Glock switch'.
October 13, 2025
medium
product
Product-level design change intended to reduce susceptibility to conversion devices.