The FN 509M Tactical pistol in 9mm with a 10+1 capacity and black finish (brand part no. 66-100838) is an optic-ready, mid-size striker-fired pistol built for concealed carry, pairing a compact-capacity magazine with duty-grade features. FN America machines the 4.5-inch black-finished barrel with a 1/2×28 thread pattern for a suppressor or muzzle device, and suppressor-height 3-dot night sights work with the optic footprint for co-witness aiming. Ambidextrous controls support both left- and right-handed shooters, and two 10-round magazines ship with the pistol. Among concealed-carry semi-auto handguns, this 509M Tactical black 10-round configuration favors shooters in restricted-capacity markets.

Key Specifications

• Chambered in 9mm.
• Capacity of 10 rounds.
• The barrel measures 4.5 inches and is threaded at 1/2×28.
• The finish is black, applied to both frame and barrel.
• The sights are suppressor-height 3-dot night sights, working with the optic footprint.
• The controls are ambidextrous, supporting both left- and right-handed shooters.
• Two 10-round magazines ship with the pistol.
• Rifled with a 1:10-inch RH twist rate.
• The slide is optic ready and serrated.

Frequently Asked Questions

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

Do the sights co-witness with a mounted optic? Yes, the suppressor-height night sights work with the optic footprint.

Buy the FN 509M Tactical Pistol, Black, 10-Round

Optic-ready, threaded-barrel performance in a restricted-capacity configuration is exactly what this 509M Tactical delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.