Shadow Systems MR/DR/XR Locking Block Pins - Nitride

The Shadow Systems MR/DR/XR Locking Block Pins are factory-spec replacement components for the locking block on the company's MR920, DR920, and XR920 pistol lines. These pins retain the locking block inside the polymer frame and are critical to reliable function.

Finished in a corrosion-resistant nitride coating, this pin set installs as a direct OEM replacement for worn or lost components. The dimensions match factory specs for a drop-in fit during trigger-pack work, frame service, or routine maintenance.

Beyond the Shadow Systems MR/DR/XR920 platform, these locking block pins are also compatible with Glock Gen 3 and Gen 4 pistols chambered in 9mm Luger, .40 S&W, and .357 SIG, making them a handy spare for gunsmiths and end users working across multiple Glock-pattern frames.

Keep a set on hand for field repair or bench work on your Shadow Systems or compatible Glock-pattern pistol.