FN 509 Compact MRD 9MM 3.7″ 15RD Optic Ready

The FN 509 Compact MRD delivers full-size defensive capability in a compact, optics-ready 9mm platform. Designed for concealed carry, personal protection, and duty use, this striker-fired pistol combines exceptional reliability, ambidextrous controls, and advanced optics compatibility in a rugged, easy-to-carry package.

With its 3.7-inch barrel, durable black finish, and FN’s Low-Profile Optics Mounting System, the 509 Compact MRD offers outstanding versatility for shooters who want modern red dot capability without sacrificing concealability. Whether carried daily or used at the range, this pistol delivers the dependable performance FN is known for.

Benefits

Optics-Ready Versatility – FN’s patented Low-Profile Optics Mounting System accepts most popular miniature red dot sights while maintaining a low mounting height.

Enhanced Control and Comfort – Fully ambidextrous controls, improved grip texturing, and interchangeable backstraps provide excellent handling for a wide range of shooters.

Carry-Friendly Firepower – Compact dimensions paired with included 12-round and 15-round magazines deliver an excellent balance of concealment and capacity.

Features

3.7″ Cold Hammer-Forged Barrel – Provides reliable accuracy and durability in a compact defensive platform.

Low-Profile Optics Mounting System – Designed to accommodate a wide variety of red dot optics while retaining co-witness sight capability.

Flat-Faced Trigger – Offers a cleaner break and more controllable trigger press for improved shooting performance.

Additional highlights include fixed black co-witness sights, a durable polymer frame, striker-fired operation, and full compatibility with higher-capacity FN 509 magazines. The compact 7.4-inch overall length and lightweight 26.5-ounce design make it well suited for concealed carry while still providing the shootability of a larger handgun.

FN 509 Compact MRD Specifications

Manufacturer: FN America

Model: 509 Compact MRD

Caliber: 9mm

Action: Striker-Fired Semi-Auto

Barrel Length: 3.7″

Overall Length: 7.4″

Weight: 26.5 oz

Capacity: 15+1

Frame Material: Polymer

Frame Finish: Black

Grips: Black Polymer Interchangeable Backstraps

Sights: Fixed Black Co-Witness Sights

Optics Ready: Yes, Low-Profile Optics Mounting System

Controls: Fully Ambidextrous

Magazines Included: One 12-Round Magazine, One 15-Round Magazine