Please allow 3 business days to process items with FREE shipping

phone: 888-744-4880
12 of 12 Items
  • R3D 2.0 FN green angle R3D 2.0 FN orange angle

    R3D 2.0 Night Sights - FN

    Visible when seconds count! R3D 2.0 sights are the premium solution for a traditional notch and post sighting system. The set is engineered to provide a brighter, stronger, and easily installable sighting system for increased defensive preparedness. R3D...

    $137.49
  • DXT2 Tritium Night Sights orange for FN 509 DXT2 Tritium Night Sights orange for FN 509 in low light DXT2 Tritium Night Sights yellow for FN 509 in low light

    DXT2 Big Dot Night Sights - FN

    Don't Struggle to See Your Front Sight! Our DXT2 Night Sights for FN pistols are tritium night sights specifically crafted to enhance the performance of your EDC pistol. These defensive sights are meticulously designed with features to ensure optimal...

    $142.99
  • R3D Tritium Night Sights orange for FN R3D Tritium Night Sights green for FN R3D Tritium Night Sights low light orange for FN R3D Tritium Night Sights low light green for FN

    R3D Night Sights - FN

    See Your Sights in any Light! R3D Night Sights feature traditional 3-dot tritium, notch and post, sight picture. The tritium front sight comes equipped with our proprietary photoluminescent orange or green Glow Dot, which absorbs ambient light and glows...

    $104.99
  • F8 Tritium Night Sights  orange for FN F8 Tritium Night Sights low light orange for FN

    F8 Night Sights - FN

    Simple Sight Focus Draws your Focus to the Front! XS Sights F8 Night Sights for FN handguns have been specifically designed to cater to the needs of FN 509 pistol owners. These sights offer an exceptional sight picture and increased front sight focus,...

    $120.99
  • Minimalist Tritium Night Sights Orange Minimalist Tritium Night Sights Orange sight picture Minimalist Tritium Night Sights Green sight picture low light Minimalist Tritium Night Sights Green

    Minimalist Night Sights - FN

    Upgrade your FN's sights with XS Sights today and experience the unbeatable performance that our Minimalist Night Sights offer.  Minimalist Night Sights Overview: Tritium front sight and non-tritium rear sight Glow dot absorbs ambient light and...

    $59.99
  • DXT2 Tritium Night Sights green for FN 509 DXT2 Tritium Night Sights green for FN 509 sight picture in low light

    DXT2 Standard Dot Night Sights - FN

    Don't Struggle to See Your Front Sight! Our DXT2 Night Sights for Fn 509 are tritium night sights specifically crafted to enhance the performance of your EDC pistol. These defensive sights are meticulously designed with features to ensure optimal...

    $142.99
  • DXT Big Dot Night Sights for FN 509 angle DXT Big Dot Night Sights for FN 509 side

    DXT Big Dot Night Sights - FN

    Don't Struggle to See Your Front Sight! DXT Night Sights are defensive tritium sights designed to enhance your EDC pistol. The front sight uses a reflective white dot that bounces ambient light for increased low light visibility. We designed the DXT...

    $137.00
  • DXW2 Tritium Night Sights yellow for FN 509 DXW2 Tritium Night Sights yellow for FN 509

    DXW2 Big Dot Night Sights - FN

    Don't Struggle to See Your Front Sight! Our DXW2 Night Sights for FN are tritium night sights specifically crafted to enhance the performance of your EDC pistol. These defensive sights are meticulously designed with features to ensure optimal visibility...

    $120.99
  • DXW Big Dot Night Sights for FNS9 DXW Big Dot Night Sights for FNS40

    DXW Big Dot Night Sights - FN

    Don't Struggle to See Your Front Sight! DXW Night Sights are defensive tritium sights designed to enhance your EDC pistol. The front sight uses a reflective white dot that bounces ambient light for increased low light visibility. We designed the DXW...

    $104.00
  • DXW2 Tritium Night Sights green for FN 509 DXW2 Tritium Night Sights green for FN 509 sight picture

    DXW2 Standard Dot Night Sights - FN

    Don't Struggle to See Your Front Sight! Our DXW2 Night Sights for FN 509 pistols are tritium night sights specifically crafted to enhance the performance of your EDC pistol. These defensive sights are meticulously designed with features to ensure optimal...

    $120.99
12 of 12 Items

FN FIREARMS

Since it's founding in 1889, FN - Fabrique Nationale d'Armes de Guerre - has been well known as a manufacturer of small arms for military, sporting, competition and self-defense use. From the famed FN HiPower to the FN 509, FN offers handguns for a wide range of shooting needs.

Most FN handguns are factory equipped with sights that are not ideal for an EDC or home defense handgun. XS offers durable iron sights that will hold up to years of abuse and stay on the gun. Our sights come equipped with tritium to provide an illuminated sight picture in low light. Tritium glows for 10-years and does not require batteries or maintenance. We carry a variety of sight pictures tailored to specific shooting styles.

DXT2 Night Sights offer the fastest sight acquisition on the market. The big dot front sight and open rear sight allow a greater field of view down range, increasing the front sight acquisition speed. The simple in-line sight picture reduces sight alignment time by eliminating an extra focus point compared to traditional notch and post sights. The dot-the-i sight picture prevents confusing the front and rear sight while under stress or in low light. DXT2 Sights are available in a Standard Dot (0.140”) or Big Dot (0.188”) front sight.

XS front sights are equipped with our proprietary photoluminescent Ember Glow Dot technology. The Glow Dot features a high-contrast color in bright light, absorbs ambient light, and glows in low light. Ember is available in multiple colors to satisfy personal color preferences. DXT2 and R3D sights are available with a tritium or non-tritium rear option to fit your shooting style.

Whatever your shooting needs, XS Sights has your FN 509 covered.

FN History

Fabrique Nationale d'Armes de Guerre (National Factory for Weapons of War), known as FN or FN-Herstal, was founded in Herstal, Belgium in 1889. Starting with a contract to manufacture Mauser Model 89 rifles for the Belgian Military, FN has continued to manufacture top of the line small arms for various military forces around the world.

The Grand Puissance, french for High Power, was the last handgun designed by John Browning, and was the first handgun to use a double-stack magazine. The FN HiPower, as it came to be known, was used by both the Axis and Allied powers during World War II, and sees continued use by military units and law enforcement agencies to this day.

The FN Five-SeveN was developed in the mid 1990's to fulfill a NATO request for a new cartridge, handgun and submachine gun for personal defense roles. The FN Five-Seven uses a 5.7x28mm FN cartridge which is optimized for penetration and is less likely to overpenetrate than common pistol calibers. The FN Five-Seven is in use by military and law enforcement units around the world.

The FN 509 is FN's newest 9mm striker-fired pistol, released in 2017. The FN 509 is an ergonomic and rugged pistol that is well suited for self-defense, competition and duty use. The FN 509 features a MIL-STD-1913 accessory rail, low bore axis and interchangeable backstraps for a custom fit.

For over 120 years, FN has been at the forefront of firearms design. FN's commitment to quality and innovation has made FN-Herstal a trusted name in the firearms industry. FN's line of pistols is sure to have a model that meets your needs, whether you are looking for a duty pistol, self-defense handgun or a new competition pistol.

Notable Models

1900 - .32ACP semi-automatic pistol designed by John Browning. First production handgun to use a reciprocating slide.

P35 HiPower - 9MM duty pistol designed by John M. Browning and  Dieudonné Saive. First handgun to use a double column magazine. First of the "Wonder Nines".

FN Five-SeveN - Polymer framed pistol chambered in 5.7x28mm. Designed for NATO request for a "personal defense weapon," or PDW, along with the P90 family of submachine guns.

FNS - Family of polymer framed, striker fired handguns. Available in compact, full size, and long slide to suit various needs.

FN 509 - Upgraded version of the FNS that was submitted for the U.S. Army Modular Handgun System trials. Available in compact, full size and long slide variations.