This is the genuine Glock factory locking block designed for compact and subcompact pistol models. It serves as a critical component in the slide and barrel assembly of your firearm.
The locking block is a precision component that works in conjunction with the barrel to maintain proper headspace and timing. Whether you're replacing a worn part or maintaining your firearm, using genuine Glock components ensures your pistol functions as designed.
This is an original equipment part—the same component Glock installs in new firearms.