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The FN 509M Tactical is the midsize member of FN's 509 Tactical family, and it threads the needle between a pistol you can actually carry and one that's genuinely set up for serious use. Built on a striker-fired polymer frame with a steel slide, it comes out of the box ready for a red dot, a suppressor, or both. The 4.5-inch cold hammer-forged stainless steel barrel is threaded 1/2×28 and includes an O-ring sealed thread cap to keep things from backing off during fire. Trijicon tritium suppressor-height 3-dot night sights are already installed, so you're not stuck hunting down an upgrade the day you take delivery. The FDE finish on the frame gives it the classic two-tone FN look, and the controls are fully ambidextrous, so lefties and right-handers are equally covered without any modifications.
FN's Low-Profile Optics Mounting System is one of the better factory solutions in the industry. The patented system uses adapter plates to accept more than ten different miniature red dot optics without any direct milling of the slide, and the sights co-witness with whatever dot you mount. When you're running irons only, the slide cap drops in flush and its raised wings protect rear sight alignment and give you a solid racking surface if you need to work the slide one-handed against a belt or boot. It's a detail that sounds small until you actually need it.
The grip frame features aggressive, multi-pattern texturing and ships with two interchangeable backstraps so you can tune the feel to your hand. The MIL-STD-1913 accessory rail up front is ready for a weapon light, and the flared magazine well makes reloads fast and consistent. At 27.9 ounces unloaded, it has enough mass to keep recoil manageable without being a brick. The trigger runs a duty-appropriate 4.5 to 6.7 lb pull and has proven predictable and reliable across a wide range of ammunition. Accuracy at practical distances is strong, and the platform has well-established reliability roots going back to FN's entry in the U.S. Army Modular Handgun Trials.
This specific bundle is the restricted-capacity configuration, shipping with five 10-round magazines. The frame itself is compatible with higher-capacity FN 509 magazines when used with the appropriate sleeve, giving you flexibility down the road. If you want a suppressor-ready, optics-ready midsize 9mm that genuinely arrives complete, the 509M Tactical FDE bundle is hard to argue with.
The FN 509M Tactical uses FN's patented Low-Profile Optics Mounting System, which accepts more than ten commercially available miniature red dot optics using the included adapter plates. Popular options include the Trijicon RMR, Leupold DeltaPoint Pro, Sig Sauer Romeo series, and Burris Fastfire, among others. No direct milling of the slide is required, and the system is designed to remain compatible with future optics releases.
Yes. The 4.5-inch cold hammer-forged barrel is threaded 1/2×28, which is the standard thread pattern for the vast majority of 9mm suppressors on the market. It ships with an O-ring sealed thread cap that prevents backing off during unsuppressed fire. The included Trijicon suppressor-height night sights are tall enough to co-witness over most 9mm cans.
The FN 509M Tactical's midsize grip frame is natively compatible with FN 509 magazines of varying capacities when the appropriate grip sleeve is used. The pistol ships in this bundle with five 10-round magazines, but the platform supports 15 and 24-round FN 509 magazines with the sleeve installed. This gives you flexibility for range use or higher-capacity applications.
The Midsize version uses a shortened grip frame compared to the full-size 509 Tactical, which reduces the overall height and makes it more suitable for concealed carry or users with smaller hands. Both share the same 4.5-inch threaded barrel, Low-Profile Optics Mounting System, and suppressor-height Trijicon night sights. The primary difference is in the grip frame size and native magazine capacity, not in the tactical feature set.
Yes, fully. Both the slide stop lever and magazine release are ambidextrous as configured from the factory. No modifications or additional parts are needed for left-handed operation. This is one of the features that sets the 509 platform apart from a lot of competitors that treat left-handed controls as an afterthought.
The factory trigger is rated at 4.5 to 6.7 lbs, which is in line with a duty-grade striker-fired design. It has a consistent, predictable pull that performs well at the range and under stress. If you want a lighter or crisper feel, Apex Tactical makes an action enhancement kit specifically for the FN 509 platform that is a popular and well-regarded upgrade.
| UPC | 845737017408 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 66-101710 |
| Action | |
| ATF Type | Pistol |
| Barrel Length | 4.5" |
| Caliber/Gauge | 9mm |
| Capacity | 10 + 1 |
| Length | 12.5 |
| Number of Magazines | 5 10 rd. |
| Package Height | 3.3 |
| Package Width | 11.1 |
| Product Type | Semi-Auto Pistol |
| Safety | No |
| Shipping Weight | 4.7 |
| Sights | Suppressor-Height 3-Dot NS |
| Sights Type | Night Sights |
| Slide Description | Optic Ready/Serrated |
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