Upgrade your FN 509® with the cutting edge performance of the 
FN Compensator Accessory Kit. First introduced on the FN 509 
CC Edge™, the compensator’s unique quick-detach (QD) design 
allows for toolless install and removal from the proprietary 
non-threaded QD barrel in a matter of minutes, no gunsmith or 
factory service required.
Compatible Models:
FN 509 Midsize
FN 509 Midsize MRD
FN 509 Midsize Tactical
FN 509 standard
FN 509 Tactical
The FN Compensator significantly decreases felt recoil and 
features v-style ports on either side that vector gases and flash 
out of the user’s field of view. The result is a shooting experience 
that is flatter and more controlled, allowing users to maintain a 
consistent sight picture from shot to shot. 
Machined from stainless steel and coated with a robust PVD 
finish, the compensator is extremely durable and is designed to 
withstand hard use across standard and self-defense loads for 
the widest degree of compatibility, while still utilizing the factory 
FN 509® recoil spring.
FN Compensator Accessory Kit is available in models compatible 
with FN 509 Standard, Midsize and Compact models. It ships 
with the compensator and proprietary non-threaded QD barrel.
WARNING: Use of this product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to:
https://www.P65Warnings.ca.gov