The FN 509M Tactical pistol in 9mm with a black finish (brand part no. 66-100837) is an optic-ready, mid-size striker-fired pistol built for duty and concealed carry, shipping with one 15-round and one 24-round magazine. FN America machines the 4.5-inch barrel with a 1/2×28 thread pattern for a suppressor or muzzle device, and night sights work with the optic footprint for co-witness aiming. Ambidextrous controls support both left- and right-handed shooters, and the polymer frame keeps overall weight to 26.5 ounces unloaded. Among optic-ready semi-auto handguns, this 509M Tactical black configuration favors shooters who want both a compact and an extended magazine option.

Key Specifications

• The chambering is 9mm.
• The barrel measures 4.5 inches and is threaded at 1/2×28.
• The finish is black, applied to both frame and slide.
• The sights are night sights, working with the optic footprint for co-witness.
• The controls are ambidextrous, supporting both left- and right-handed shooters.
• The pistol ships with one 15-round and one 24-round magazine.
• The unloaded weight is 26.5 ounces.
• The slide is optic ready and serrated.
• The action is striker-fired, giving a consistent trigger pull shot to shot.

Frequently Asked Questions

What magazines ship with this pistol? One 15-round and one 24-round magazine.

Is the barrel threaded? Yes, at 1/2×28, for a muzzle device or suppressor.

Buy the FN 509M Tactical Pistol, Black

Optic-ready duty performance with both a compact and extended magazine is exactly what this 509M Tactical delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.