FN 509 NMS 9mm 4in Barrel | 10rd | Black

The FN 509 NMS is a full-size 9mm semiautomatic pistol with a 4″ cold hammer-forged stainless steel barrel and a textured polymer grip. It ships with two magazines, fixed 3-dot luminescent sights, and a Picatinny (MIL-STD-1913) accessory rail for lights or lasers. For a slide-mounted red dot that pairs well without exceeding $1,000, consider the Holosun 507C X2 for a balance of footprint and visibility.

Product Specifications

• The manufacturer is FN America / FN Herstal.
• The model designation is FN 509 NMS.
• The caliber is 9mm.
• The barrel length is 4 inches.
• The barrel is a cold hammer-forged stainless steel design with a recessed target crown.
• The firearm uses a semi-automatic action.
• The listed capacity is 10 rounds.
• The package includes 2 magazines.
• The frame is described as a polymer frame with a Picatinny rail.
• The grip material is listed as polymer.
• The sights are fixed 3-dot luminescent sights.
• The finish is described as black.
• The weight is listed as 26.9 oz.
• The overall length is 7.40 inches.
• The UPC is 845737008086.

This FN 509 NMS balances a full-size grip and sight radius with a durable, cold hammer-forged barrel. Its textured polymer frame and included magazines make it ready for range sessions and professional/training uses where reliability and repeatable ergonomics matter. The Picatinny rail provides straightforward accessory mounting for lights or lasers, and the factory sighting arrangement offers a clear, consistent sight picture for follow-up shots.

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