Introduced earlier this year after extensive trials and development, the new optics-ready FN 509 Edge LS is feature heavy and walks the line between practical and competition. 

Billed as the "ultimate tactical pistol" when unveiled, the 9mm FN 509 LS (long slide) Edge has an optics-cut slide over a 5-inch hammer-forged, target-crowned barrel. By comparison, the standard FN 509 Tactical series uses a 4.5-inch threaded barrel on a shorter slide with a shorter sight radius. Going past the added length, the 509 Edge LS also brings with it enhanced ergonomics and adaptability with a flat-face, facet-edge trigger and other features. 
 

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Standard with a graphite PVD finish, the 509 Edge LS runs 8.2-inches overall with a 6.7-inch sight radius (Photos: Chris Eger/Guns.com)
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With lightening cuts to reduce weight and improve balance, the gun weighs 31-ounces. 
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It compares favorably in size to a classic M1911. It also compares well to the Glock 34.
The Edge can be looked at as an updated optics-ready FN FNS-9 Longslide, shown here, with 509-series internals. The FNS-9 LS has been a favorite on grueling IPSC/USPSA, and 3-gun matches in past years. 
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The 1:10" RH barrel is target-crowned, and the frame has a Mil-Std 1913 rail for WMLs and other accessories. Note the high MRD sights and lightening cuts on the slide. 
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FN says their flat-face trigger pull runs between 4.5 and 6.5 pounds. By using a new, conical striker, FN says they have dropped the standard trigger pull by 1.5 pounds from the rest of the 509 line. We found our T&E gun to break consistently at 5.5 pounds, with a wall that comes up fast in about a half-inch of travel, cracking like the metaphorical "glass rod" at 90-degrees with a short reset. 
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Note the oversized, knurled magazine release and FN's new, perimeter frame texture. 
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Surface controls include an oversized, ambidextrous slide stop, seen here on the right side. While not billed as ambi, we found the magazine release can be manipulated with the hard press of a fingertip from this side as well. 
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The pistol has an installed .040-inch fiber optic front sight and blackout rear notch that co-witnesses with MRD sights.
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Included are a trio of 17-round steel-body magazines with orange followers. In our opinion, all handguns should ship with three mags. As a 509, it also accepts FN's 24-rounders.
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The aluminum magwell is flared to inhale fresh mags and scalloped on the side to strip them away if needed. Note the graphite anodized aluminum floor plates.  
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Takedown is accomplished easily with a frame-mounted lever and is straightforward. The barrel uses a polished chamber and ramp. 
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The internal view down into the grip frame.  
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The pistol ships in an FN-branded zipper case with a pair of interchangeable backstraps, manual, lock, and MRD kit. More on the latter in a minute. 

 

Initial performance impressions

 

The Edge has a modest recoil, even with full-powered JHP ammo, and it is easily controlled. 
 

 

So far, we have put about 500 rounds through the gun on the way to 2K, all with the installed iron sights and the pistol right out of the box with no added lube. The rounds were a mix of old handloads of mine, along with factory Winchester, Federal, and PMC. These initial laps around the range have been easy, with no jams or malfunctions to report, and the gun has shown exceptional practical accuracy. 
 

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Typical two-mag slow fire from 25 yards, with unadjusted factory irons. How about that lone flyer on the target to the right? Story of my life. 

 

Optics?

 

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The optics cut is protected by a distinctive slide cover plate that incorporates Enfield P14/M1917-style "ears" around the rear sight.
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It is removed with a Torx wrench, which is included in FN's MRD kit that comes with the gun. 
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The patented FN Low-Profile Optics Mounting System sent with the Edge includes multiple plates for a variety of micro red dots, including Leupold's Delta Point Pro, the Trijicon RMR, Doctor Optic, Vortex Venom/Viper/Razor, C-More STS2, and Burris sights. 
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We mounted one of Leupold's new Delta Point Pro 6MOA red dots, which fit like a dream in under 10 minutes of effort with the included Torx wrench. Weight on a postal scale, with the Delta Point Pro installed and the gun stoked with 18 rounds of Federal American Eagle 147-grain FMJ FPs, was 36.5-ounces all-up. 


Expect more on how the FN 509 Edge LS acts with the red dot installed as our review and evaluation continue.

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