The SP00322 is a genuine Glock OEM trigger mechanism housing with the 9mm ejector pre-installed. It mounts in the frame and carries the ejector that kicks spent cases clear during the cycle. Features: Genuine Glock OEM factory part 9mm ejector pre-installed, saving a separate ejector press-in step Fits standard-frame 9mm: Glock 17, 19, 26, 34 Generation 1 through 3 This housing is for Gen 1-3 standard-frame 9mm pistols. It does not fit Gen 4 or Gen 5, the 19X or 45, or the slimline 42/43. The bundled ejector is the 9mm standard-frame ejector - confirm your model and generation before ordering. GLOCK is a registered trademark of GLOCK Inc. 3CR Tactical is not affiliated with, endorsed by, or sponsored by GLOCK Inc. Any reference to GLOCK products is for identification and compatibility purposes only.