The FN 509 Midsize pistol in 9mm with a black finish (brand part no. 66-100463) is a striker-fired duty and defensive platform sized between FN’s compact and full-size 509 offerings. FN America builds the pistol with a 15-round capacity and a 4-inch barrel, and the serrated stainless steel slide pairs with fixed 3-dot luminescent sights for reliable low-light aiming. Two magazines ship with the pistol, and the design runs FN’s No Manual Safety (NMS) system with a double-action trigger pull. Among midsize semi-auto handguns, this FN 509 Midsize configuration favors shooters who want a proven striker-fired 9mm sized for carry.

Key Specifications

• Chambered in 9mm.
• Capacity of 15 rounds.
• Ships with two magazines.
• The barrel measures 4 inches.
• Rifled with a 1:10 rate of twist.
• The slide is serrated stainless steel.
• The sights are fixed 3-dot luminescent, aiding low-light aiming.
• The trigger system runs FN’s No Manual Safety (NMS) design with a double-action pull.
• The trigger system is Striker Fired.

Frequently Asked Questions

Does this pistol have a manual safety? No, it uses FN’s No Manual Safety (NMS) system.

How many magazines ship with this pistol? Two 15-round magazines are included.

Buy the FN 509 Midsize Pistol, Black

A striker-fired 9mm sized between FN’s compact and full-size 509 offerings is exactly what this FN 509 Midsize Pistol, Black delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.