FN 509 Midsize Tactical 9mm 4.50in Threaded FDE

Description

The FN 509 Midsize Tactical is a striker-fired pistol designed for everyday carry, duty, and home use. It ships optics-ready with a threaded 4.50-inch barrel and suppressor-height sights to accommodate common accessories. The Flat Dark Earth polymer frame includes interchangeable backstraps and a MIL-STD-1913 accessory rail to balance control and versatility.

Key Specifications

• The caliber is 9mm.
• The barrel length is 4.50 inches.
• The action type is striker fired.
• The model designation is FN509M (Midsize Tactical).
• The frame material and finish are Flat Dark Earth polymer.
• The slide is optic-cut and serrated with a PVD finish.
• The thread pattern is 1/2×28.
• The sights are suppressor-height 3-dot night sights.
• The firearm includes one 15-round and one 24-round magazine.
• The optics interface is the FN Low-Profile Optics-Mounting System.

With a focus on practical adaptability, the FN 509 Midsize Tactical pairs a manageable midsize frame with features that support red-dot optics and suppressor use. Its accessory-ready slide, threaded barrel, and included magazines make it a straightforward option for shooters seeking a capable, service-style pistol that adapts to a range of roles.

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