Glock Locking Block Features The Glock locking block is a core structural component that governs how the slide locks up with the frame during the firing cycle directly affecting both reliability and accuracy. Manufactured to original Glock specifications this part restores factory-correct fit and function when replacing a worn or damaged locking block on a slim-frame model. For owners who want a guaranteed factory-correct replacement rather than a generic aftermarket part this locking block is the dependable choice. Designed specifically to fit the G42 G43 G43X and G48 slim-frame 9mm pistols this locking block drops in as a direct replacement without requiring gunsmith fitting. Replacing a worn locking block is a straightforward maintenance step that can resolve lockup or reliability issues that develop after extended use. This Glock locking block is available for sale at GrabAGun for slim-frame Glock owners seeking a genuine factory replacement part. Glock Locking Block Specifications Brand: Glock Type: Locking Block Caliber: 9mm Luger Fits: G42 G43 G43X G48 Color: Black Available At: GrabAGun