This is an FN model 509 Tactical semi-automatic pistol in 9mm Luger caliber. It has a 4 3/8" threaded barrel, optics ready slide, 3-dot elevated fixed night sights, light rail, ambi-mag release, and ambi-slide release. This pistol is in good conndition with a clean, bright bore. It comes in an FN zippered softcase with four magazines (3 17-rd, and 1 24-rd).