The FN 509C pistol in black with a 3.7-inch barrel and 10+1 capacity (brand part no. 66-100816) is a compact double-action-only 9mm built for concealed carry, with a 10-round magazine configuration for added-regulation states. FN America serrates the slide over a black polymer frame, and a HiViz front sight paired with a low-profile rear sight supports quick target acquisition. The pistol ships with two 10-round magazines for a complete carry package. Among compact semi-auto handguns, this 509C configuration favors shooters in added-regulation states.

Key Specifications

• The chambering is 9mm.
• The capacity is 10+1 rounds.
• The barrel measures 3.7 inches.
• The trigger action is double action only.
• The sights pair a HiViz front with a low-profile rear.
• The slide is serrated over a black polymer frame.
• Two 10-round magazines are included, built for added-regulation state compliance.
• Shipping weight of approximately 3.3 pounds.
• Equipped with a No safety.

Frequently Asked Questions

What trigger action does this pistol use? A double-action-only trigger.

Why does this configuration use 10-round magazines? It’s built to meet added-regulation state capacity requirements.

Buy the FN 509C Pistol, 9mm, 10+1

A double-action-only compact 9mm built for added-regulation states is exactly what this 509C delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.