First Look: FN 509 Midsize Tactical

A blend of a 4-inch, optics-ready slide, mid-sized frame and 15 round magazine produce a gun that shoots well and is easy to carry.

posted on June 4, 2022
FN 509 Midsize Tactical

New from FN America is the FN 509 Midsize Tactical, a well-balanced pistol that’s optics-ready, multi-role capable and optimized for shootability. This new pistol joins FN’s other successful Tactical pistols like the FN 509 Tactical and Compact Tactical. The FN 509 Midsize Tactical is a right-size combination of FN’s full size tactical slide and is equipped with the versatile Low-Profile Optics-Mounting System and a midsize grip frame.

“Building on the success of both the FN 509 Tactical and the FN 509 Midsize, our team combined the best features of both pistols into the FN 509 Midsize Tactical,” said Chris Cole, Vice President of Sales and Marketing for FN America, LLC. “The 15-round grip frame with the optics-ready tactical slide assembly offers our customers another strong contender for concealed carry and personal protection in the FN 509 family.”

Weighing in at under 30 ounces unloaded, the FN 509 Midsize Tactical positions itself as an great option for concealed carry, home defense and duty use. It has a mid-size frame which enables users to get a full-hand purchase along with the added mass of the 4.5-inch threaded barrel assembly and an improved trigger to give easy controllability and recoil management in a pistol that is easily concealed.

“FN is well known for setting the industry standard for tactical pistols starting with the FNX-45 Tactical. Features like a threaded barrel, suppressor-height night sights, extended capacity and most importantly, optics-ready,” said Chris Johnson, Senior Pistol Product Manager for FN America, LLC. “The FN 509 Midsize Tactical delivers all of those tactical features that FN customers expect in a package that is perfectly proportioned for everyday carry and much more.”

The Midsize Tactical uses a 15-round standard magazine but can also use the included 24-round FN 509 magazine to provide increased capacity. The 4.5-inch threaded barrel is cold hammer-forged and suppressor-ready with 1/2x28-inch thread pitch. The 4 inch long slide comes with FN’s Low-Profile Optics-Mounting System that is compatible with more than ten different styles of miniature red dot optics. There are also three-dot Trijicon green Tritium night sights are suppressor-height to co-witness with any compatible optic.

The FN 509 Midsize Tactical is available in both matte black and FN-signature flat dark earth (FDE), and to learn more about this new pistol and FN’s other models in the 509 line-up, please visit


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