This is a pre-owned FN 509 it features a threaded 4.5" threaded barrel, and it comes with 1 - (17) round & 1 -(24) round magazine. This pistol also comes with a Vortex Viper red dot (which has a small crack on the lenses on the bottom right which can be seen in a photo). This pistol ships with the factory box. This is a pre-owned firearm, signs of handling and firing are common.