Gun Digest

First Look: Optic-Ready FN 509 Compact MRD

At GunDigest, we independently review products. However, we may earn a commission when you purchase through links on our site. Learn More

FN gives shooters a built-for-carry, optic-ready addition to its popular striker-fired line with the 509 Compact MRD.

FN has played coy in expanding its popular line of polymer striker-fired pistols. The 509 series has grown, but over the course of years. Still, the wait has been worth it, particularly for those who have been champing at the bit for a true-to-form concealed carry pistol.

The recently announced 509 Compact MRD is long on features along with the performance on which the line has built its renown. In particular, the 3.7-inch barreled 9mm pistol boasts the MRD line’s low-profile optics-mounting system, compatible with most miniature red-dots presently on the market. As is the case with other 509 MRD models, the compact also features blackout iron sights configured to co-witness, in case your red-dot happens to go out at the moment of truth.

Bone Up On FN Guns:

The 509 Compact MRD offers 12+1 capacity while maintaining an overall low 4.8-inch height and manageable 25.5-ounce weight unloaded. The double-stack comes in much slighter than many in its class, and even outdoes comparable single-stacks. Additionally, the pistol has a flat-face trigger, interchangeable backstrap, ambidextrous controls and an accessory rail.
It ships with a 12-round flush-fit magazine, 15-round extended-grip magazine and zipper case. The MSRP on the FN 509 Compact MRD is $799.

More From FN:

McLean, VA – December 20, 2019) FN America, LLC is pleased to announce the release of the smallest addition to the FN 509® family of pistols, the FN 509 Compact MRD, an optics-ready compact pistol featuring the company’s patented FN Low-Profile Optics-Mounting System,™ further expanding the optics-ready FN 509 models to four.

The FN 509 Compact MRD is chambered in 9mm and is striker-fired. It features a 3.7-inch barrel and compact slide, and is available in both black and flat dark earth (FDE) finishes. The patented optics mounting system allows for a low-profile, direct mount through a carefully developed plate system that perfectly positions the optic so that the focal point allows for a low-profile mount and co-witness with the all-black iron sights that minimize interference with the optic.

The frame, reduced in overall size for concealability, features a MIL-STD 1913 Picatinny rail that accepts most compact pistol lights, improved controls to aid in manipulation, improved texturing on the two included backstraps for better recoil management, and a new flatter faced trigger allowing for more controllable trigger press and cleaner break.

Each pistol ships in a branded soft-sided, zippered case with FN Low-Profile Optics-Mounting System™ plate kit, one 12-round magazine with pinky extender and one 15-round magazine with grip sleeve or in an all 10-round magazine configuration for states with magazine capacity restrictions. The FN 509 Compact MRD also has the capability to accept all higher capacity FN 509 magazines with use of a sleeve. Manufacturer’s suggested retail price of the FN 509 Compact MRD pistol is $799.00 and is available to purchase through authorized retailers.

FN 509 Compact MRD
Caliber: 9mm
Operation: Double-action
Mag Capacity: 10 or 12/15 Rd.
Weight: 25.5 oz.
Barrel Length: 3.7″
Overall Length: 6.8″
Twist Rate: 1:10″ RH
Height: 5.2″ / 4.8″
Width: 1.35″
Trigger Pull: 5.5 – 7.5 lb.
Sight Radius: 5.6″

For more information on the FN 509 Compact MRD, please visit

Next Step: Get your FREE Printable Target Pack

Enhance your shooting precision with our 62 MOA Targets, perfect for rifles and handguns. Crafted in collaboration with Storm Tactical for accuracy and versatility.

Subscribe to the Gun Digest email newsletter and get your downloadable target pack sent straight to your inbox. Stay updated with the latest firearms info in the industry.

Get Free Targets

Exit mobile version