1781: FN Model 509 in 9 MM with 4" Barrel. This striker fire autoloader, features a polymer frame, a 4" CHF SS barrel w/polished chamber and feed ramp, 4 magazines, external extractor, fixed 3-dot luminescent combat-style sights, enhanced all-condition grips, front and rear cocking serrations, ambi slide stop lever and mag release, Mil-Std 1913 mounting rail, interchangeable backstraps and a black finish. Estimated Value: Low: $550 High: $650