Herrington Arms
FN 509 Midsize Tactical Compensators
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Manufacturer
FN
Model & version
509 Midsize Tactical
Mounting details
MIL-STD-1913 Picatinny, FN Low-Profile Optics Mounting System
Parts listed
13 total
FN 509 Midsize TacticalCompensators
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
Herrington Arms3
Based on manufacturer information — Oct 2026. HA V2 UNIVERSAL COMP 9MM (1/2-28)
HC509 COMPENSATOR FOR FN 509
May require modification — see notes.
Parker Mountain Machine2
PMM Duty Compensator for FN 509
May require modification — see notes.
PMM Ultra Compensator for FN 509
May require modification — see notes.
Strike Industries3
Strike Micro Threaded Comp - CIRCLE
Strike Micro Threaded Comp - QUAD
Strike Pistol Linear Compensator
TANDEMKROSS1
Game Changer PRO Compensator for 9mm
True Precision3
Cobra Compensator 9mm 1/2x28
Micro Compensator 9mm 1/2x28, S-Type
Micro Compensator 9mm 1/2x28, Y-Type
Tyrant CNC1
Tyrant Uni-Comp