The FN 509 is a midsize polymer frame handgun made by Fabrique National Herstal, usually referred to as Fabrique Nationale or simply FN. This striker-fired polymer frame pistol is clear and direct competition with the Glock 19, Glock 45, and the Glock 43X. This gun has a full-sized frame with a mid-length barrel.
It’s extremely comparable to the Glock 19 or the Glock 45 with a longer frame. The FN 509 could easily use this gun for concealed carry or outside the waistband carry.
I could easily see the FN509 being a duty weapon for some law enforcement agencies or militaries.