Every Glock owner knows that reliability comes down to the quality of its individual parts. The Locking Block Pin is a critical, though often overlooked, component in your Glock’s lower assembly. This pin secures the locking block to the frame, ensuring proper barrel lockup and consistent operation. Whether you’re performing routine maintenance, a custom build, or replacing a worn part, this essential Glock part from Miami Shooters Supply is built to the original specification for a perfect fit and dependable performance.
Key Features
- Manufactured to OEM dimensions for a precise, drop-in fit in compatible Glock frames.
- Made from hardened steel to resist shearing and deformation under repeated recoil forces.
- Features a durable black finish that provides corrosion resistance and maintains the factory aesthetic.
- Simple, single-piece design ensures easy installation and removal with a standard punch tool.
- A direct replacement part that restores the structural integrity of your firearm’s critical locking system.
Built For
This pin is essential for any Glock owner performing frame work, whether it’s a detailed strip for deep cleaning, installing an aftermarket locking block, or assembling a Polymer80 or similar frame. It’s also the exact part you need if your factory pin has become lost, damaged, or shows signs of wear over thousands of rounds.
Specifications
- Material: Hardened Steel with Black Finish
- Compatibility: Designed for Glock Gen 1-4 models in 9mm, .40 S&W, and .357 SIG calibers (Gen 5 models use a different cross-style pin).
- Type: Locking Block Pin (also commonly referred to as the Trigger Housing Pin).
- Fit: Drop-in replacement for OEM part.
FAQ
Is this the same as the trigger pin?
No. The Locking Block Pin sits just forward of the trigger pin in the frame. It is a shorter, thicker pin specifically designed to secure the locking block.
Will this fit a Glock 19 Gen 3?
Yes. This locking block pin is compatible with the Glock 19 Gen 3, as well as other standard double-stack 9mm/.40/.357 models from Generations 1 through 4.


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