NRA Gun of the Week: FN 509 Compact MRD FDE

by
posted on June 12, 2020
When the U.S. Army released a Request for Proposal looking for a new firearm to replace Beretta’s M9, a new family of handguns was developed at Fabrique Nationale—the Model 509. Even though FN’s submission was not selected in the XM17 Modular Handgun System trials, the Belgian-based company provided the commercial market with a field-worthy design based off of its previously-successful FNS pistol. The FN 509 immediately gained acceptance with target shooters and home defenders, line extensions of the striker-fired, double-action pistol followed. Moreover, a compact-size variant was unveiled tailored for concealed carry with enhanced features.

Left-side view of a brown FN pistol on white background with text on image.

FN’s 509 Compact Miniature Red Dot (MRD) FDE features the company’s patented Low-Profile Optics Mounting System, a unique setup designed to accommodate the industry’s most-trusted red-dot and reflex optics. Weighing in at 22.7 ozs. empty and measuring 5.2”-tall, 1.35”-wide and 6.75” long, the 509 Compact MRD holds up to 15 rounds of 9 mm Luger; 24-round magazines borrowed from the full-size variant also fit.

Two pistol magazines with brown base plates standing vertical on white background.

A modular polymer frame is provided with the 509 Compact MRD, and our test sample arrived in Flat Dark Earth (FDE). FN provides interchangeable backstraps to accommodate various hand sizes and shooting grips its users require. Additionally, improved patterns of texturing combine to help manage recoil and stability.

Quartering view of a brown FN pistol with optic attached shown on white background.

Users of the FN 509 Compact MRD FDE pistol will find its controls, slide stop and magazine release, to be bilateral for strong- and weak-hand operation. An improved trigger that includes a passive safety mechanism is included—our test sample required a 7-lb., 1-oz. pull to release the sear.

Close-up view of handgun trigger.

Topping the frame is a steel slide fitted with a 3.7”, cold-hammer-forged, stainless steel barrel. FN includes deep- and wide-cut serrations fore and aft for an enhanced experience when manipulating the slide. The tactical sights provided are designed to cowitness with mounted optics, and just forward of the rear sight is the company’s optic-mounting system and provided cover plate.

Close-up view of pistol slide and machining cuts to accommodate optics.

FN ships its 509 Compact MRD FDE in a soft-sided, zipper case that includes a FN Low-Profile Optics-Mounting System™ plate kit, one 12-round magazine with pinky extender and one 15-round magazine with grip sleeve—10-round units are provided for restricted-capacity localities.

To learn more about the FN 509 Compact MRD FDE, watch our NRA Gun of the Week video above.

FN 509 Compact MRD FDE Specifications
Make: FN America
Model: 509 Compact MRD FDE
Action Type: recoil-operated, semi-automatic, center-fire pistol
Chambering: 9 mm Luger
Frame: modular polymer
Barrel: 3.7” cold-hammer-forged, stainless steel
Slide: Low-Profile Optics Mounting System
Sights: dovetailed, raised square-notch rear, post front
Trigger: double-action, 7-lb., 1-oz. pull
Magazine: 10-, 12-, and 15-round detachable box
Length: 6.75”
Height: 5.2”
Width: 1.35”
Weight: 22.7 ozs. empty
MSRP: $799

Further Reading:
Tested: The FN 509 Pistol
Tested: FN's 509 Tactical Pistol
An Inside Look At The FNS Compact Pistol
FN Browning Model 1922 Pistol
FN: The First 125 Years

Extras:










Latest

Forehand & Wadsworth British Bull-Dog right-side view nickel-plated gun revolver with black grip
Forehand & Wadsworth British Bull-Dog right-side view nickel-plated gun revolver with black grip

I Have This Old Gun: Forehand & Wadsworth British Bull-Dog

Many eagle-eyed NRA members viewing the 1993 Western “Tombstone” no doubt recognized the Forehand & Wadsworth British Bull-Dog so deftly welded by actress Joanna Pacula, portraying Big Nose Kate, during a contemptuous card game between Doc Holliday and Ed Bailey.

Medal Of Honor Marine Receives Henry Repeating Arms Tribute

Henry Repeating Arms presented a Spirit of the Corps 250th Anniversary Tribute Edition rifle to Maj. Gen. Livingston for going above and beyond the call of duty on May 2, 1968, during the Battle of Dai Do in Vietnam.

Preview: Duramag 1911 DS Magazines

Duramag’s 1911 DS Magazines are compatible with numerous 9 mm Luger-chambered 2011-style handguns on the market.

Colt Monitor: The FBI’s “Fighting Rifle”

In the years between the World Wars, a rare variation of the Browning Automatic Rifle proved its reputation as an effective, devastating automatic rifle for combat between the country’s lawmen and its outlaws.

The Armed Citizen® May 19, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Report Shows Inventory, Prices Have Dropped At Firearm Retailers

Nearly all gun and related gear inventories at retailers dropped in the last 12 months. So have most prices paid at the counter, according to the year-over-year comparison detailed in the latest RetailBI report.

Interests



Get the best of American Rifleman delivered to your inbox.