Grayguns
Heckler & Koch HK45 Triggers
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Manufacturer
Heckler & Koch
Model & version
HK45
Mounting details
MIL-STD-1913 Picatinny
Parts listed
3 total
Heckler & Koch HK45Triggers
What the compatibility labels mean
How we knowHow we check compatibility
- Lab testedFit checked by Firearm Lab for the recorded setup.
- Documented fitmentSupported by manufacturer, partner, or reviewed community evidence.
- Interface matchMounting details match, but this exact model and part have not been confirmed to fit together.
Check your exact model and part before ordering. Fitment limits
Grayguns3
Based on manufacturer information — Nov 2026. HK45 Hybrid Trigger
Part no. TRG-HK-45-HTHK45 Straight Trigger