The FN 509M Tactical pistol in 9mm with a flat dark earth finish (brand part no. 66-100745) 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 FDE 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 flat dark earth.
• 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 cut 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, FDE

An optic-ready, mid-size striker-fired platform built for duty and concealed carry is exactly what this FN 509M Tactical Pistol, FDE delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.