Glock OEM Trigger Housing with Ejector 9mm Gen 1-3 - SP00322

Glock OEM Trigger Housing with Ejector, Does Not Fit GLOCK 43 - SP00322

Product Description

Inconsistent casing ejection, brass-to-face issues, and failure-to-eject malfunctions on 9mm Glock handguns often trace back to worn, bent, or degraded factory trigger housing assemblies. After thousands of cycles, internal polymer contact points can develop slop or friction that degrades trigger resetting dynamics and connector angles. The Glock OEM Trigger Housing with Ejector (SP00322) resolves these cycling and trigger reset issues by providing a genuine factory replacement housing complete with the factory 336 curved steel ejector pre-installed.

Molded from Glock's proprietary high-impact polymer, this original factory part houses critical lower fire control components including the trigger spring, connector, and connector housing channel. The integrated factory 336 ejector delivers consistent strike contact against spent 9x19mm casing rims during slide recoil, ensuring positive side clearance and clean ejection patterns across all standard 9mm Gen 1 through Gen 3 pistol frames.

Whether you are performing routine maintenance, assembling a Polymer80 or aftermarket 9mm build to factory specifications, or restoring crisp reset geometry to an older Gen 3 pistol, using genuine OEM Glock parts preserves exact mechanical tolerances, factory safety margins, and long-term fire control reliability.

*Armorer Bench Notes & Real-World Staging Guidance:

Fitment Matrix: Direct factory fitment for standard 9mm 9x19mm Glock Gen 1, Gen 2, and Gen 3 models including the Glock 17, 17L, 19, 26, and 34. Also fits 1-to-1 Gen 3 spec aftermarket frames (e.g., Polymer80 PF940C / PF940v2). Does NOT fit Gen 4, Gen 5, Glock 43, 43X, 48, or .40 S&W / .45 ACP frames.

Installation Sequence:

1. Clear the firearm, remove the magazine, and visually/physically verify an empty chamber before disassembling.
2. Detail strip the frame by removing the trigger pin, locking block pin, and trigger housing pin using a 3/32" punch.
3. Lift the complete trigger bar and housing assembly upward out of the rear receiver channel.
4. Transfer the trigger spring and connector into the new SP00322 OEM trigger housing, ensuring proper "S" hook spring orientation.
5. Reinsert the housing into the frame, re-align the rear pin hole, and seat the housing pin firmly until centered. Perform a complete dry-function and trigger reset safety check before live fire.

Key Features

• Genuine Glock OEM Factory Construction: Manufactured to exact original equipment tolerances for seamless lockup and trigger bar interaction.
• Pre-Installed Factory 336 Ejector: Includes the factory-stamped 336 curved steel ejector for clean, reliable 9mm casing ejection.
• High-Impact Factory Polymer Body: Resists thermal deformation, solvent wear, and structural fatigue during high-volume shooting.
• Restores Factory Trigger Reset Geometry: Precise internal dimensions maintain accurate connector angle engagement and smooth trigger bar travel.
• Essential Custom Build Component: Ideal factory part for Polymer80 builds, frame restorations, or bench armorer spare parts staging.

Product Specifications

• Brand: Glock
• Model: OEM Trigger Mechanism Housing with Ejector
• MPN: SP00322
• Caliber: 9x19mm Parabellum / 9mm Luger
• Platform Compatibility: Glock Gen 1–3 (G17, G17L, G19, G26, G34)
• Ejector Marking: 336
• Material: Polymer Body with Stamped Steel Ejector
• Color: Black
• Exclusions: Does NOT fit Glock 43 / 43X / 48 or Gen 4/5 models