Accessories

Fn 509 Direct Drop-In Threaded Barrel

Fn 509 Extended Magazine Releases

Fn 509 Failure Resistant Extractor

Fn 509 Heavy Duty Striker

Fn 509 Replacement Striker Components Kit

Fn 509 Slide Maintenance Kit

Fn 509 Disassembly Fixture

FN America, Barrel, 20", 556NATO, 1:7 Twist, Button Broached, Rifle Length Gas System, M16 Contour, Fits AR-15, Matte Finish, Black

FN COMPENSATED BARREL KIT BLK 509 COMPACT BLACK COMPENSATOR

FN COMPENSATED BARREL KIT BLK 509 MIDSIZE BLACK COMPENSATOR

FN COMPENSATED BARREL KIT FDE 509 COMPACT FDE COMPENSATOR

FN COMPENSATED BARREL KIT FDE 509 MIDSIZE FDE COMPENSATOR