FN 509 Compact 10-Round Magazine 9mm Extended Floorplate FDE

The FN 509 Compact 10-round magazine delivers reliable feeding and enhanced grip control with its extended floorplate design. This factory magazine combines FN's proven reliability with tactical styling in Black and Flat Dark Earth finish options.

What Makes This Different

The extended floorplate provides additional grip surface compared to flush-fit alternatives, allowing for faster magazine changes and improved control during reloads. FN's steel construction with polymer follower ensures consistent spring tension and smooth cartridge presentation. The dual-tone finish matches FN 509 Compact pistols while resisting corrosion and wear from regular use.

Key Features

• 10-round capacity optimized for concealed carry compliance
• Extended floorplate adds 0.75 inches for enhanced grip during reloads
• Steel body construction with anti-tilt follower design
• Black and Flat Dark Earth two-tone finish matches FN 509 series
• Factory specifications ensure perfect fit and function
• Heat-treated steel spring maintains consistent tension
• Witness holes for quick round count verification

This magazine performs consistently across temperature ranges and feeding conditions. The extended baseplate reduces reload fumbling during competitive shooting and provides positive magazine extraction under stress. Law enforcement and civilian users benefit from the additional control surface without compromising concealability. The factory tolerances ensure reliable feeding with both ball and hollow point ammunition.

Technical Specs

• Capacity: 10 rounds of 9mm Luger
• Overall length: Approximately 4.2 inches with extended floorplate
• Body material: Steel with polymer follower
• Finish: Black body with Flat Dark Earth floorplate
• Compatibility: FN 509 Compact pistols
• Spring: Heat-treated steel for consistent tension
• Country of origin: Belgium
• Manufacturer part number: 20100378

FN's factory engineering ensures this magazine meets the same standards as those shipped with new pistols. The extended floorplate design addresses the primary complaint about compact pistol reloads while maintaining the low profile needed for everyday carry.