Handgun Parts

The HK Handgun Parts category is an informational index of model-specific components and accessories associated with Heckler & Koch pistol platforms. Use this page to identify component groups and verify model references before consulting the manufacturer’s documentation or a qualified gunsmith.

Explore handgun-parts categories

• Barrels — model- and caliber-specific barrel references.
• Frame Parts — component references associated with compatible pistol frames.
• Slide Parts — model-specific slide, spring, pin, and safety-component references.
• Sights — front, rear, and model-specific sight references.
• Handgun Magazines — magazine references organized by platform and caliber.
• Handgun Accessories — related accessories organized separately from internal components.

Compatibility and model identification

Similar-looking parts may differ by pistol family, caliber, configuration, production generation, dimensions, or manufacturer part number. Confirm the complete firearm designation and component reference before treating parts as interchangeable. Complete pistol references are organized under HK Pistols. Rifle components are listed separately under Rifle Parts.

Professional service and firearm safety

This catalog is provided for identification and educational reference and does not contain installation or firearm-modification instructions. Keep firearms unloaded and physically separated from ammunition during inspection. Components associated with firing, locking, pressure containment, or safety systems should be evaluated and serviced by a qualified gunsmith using the manufacturer’s procedures. Never remove, disable, or bypass a safety mechanism, and follow all applicable laws.