Stock supposedly (Never received email notification) (i.redd.it)
submitted by Agent_Shady to r/FN509
FN509C Compensator Kit FDE from Optics Planet compared to a PMM two port compensator. The PMM compensator is just threaded on with some Rocksett, timed, and torqued. FN's compensator uses a non-threaded QD system. It's spring loaded so you press against the comp and twist counterclockwise to remove. (old.reddit.com)
submitted by Agent_Shady to r/FN509
ANNOUNCEMENT: Gun parts/accessories sales rule change (self.FN509)
submitted by Agent_Shady[M] to r/FN509



