FN 510 Tactical 10MM 4 71 IN Threaded Barrel 15 22RD

About this product

The FN 510 Tactical is a full-size, optics-ready 10mm Auto pistol built with a 4.71-inch cold-hammer-forged, threaded barrel, positioning it as one of relatively few duty-size 10mm options with factory optics compatibility and suppressor-ready threading together. FN America's own product page confirms this pricing and configuration directly.

Why choose a 10mm duty pistol over a 9mm?

10mm Auto delivers substantially more energy than 9mm, closing much of the gap toward centerfire rifle-cartridge performance at handgun-portable size, which is why it's a common choice for shooters in bear country, hunters looking for a sidearm backup, or anyone specifically prioritizing raw stopping power over reduced recoil and higher magazine capacity. The tradeoff is stouter recoil and a smaller ammunition selection compared to 9mm, both of which are worth weighing against your specific use case before choosing this caliber.

What optics does the 510 Tactical support, and is it genuinely threaded?

Yes — the slide is cut to accept multiple red dot footprints directly, including Leupold DeltaPoint Pro, Trijicon RMR/SRO, Docter, Vortex Venom/Viper/Razor, Holosun 507/508, C-More STS2, and Burris plates, without requiring a gunsmith to mill the slide. The barrel is threaded at 0.578x28 for a suppressor or other muzzle device, and the pistol features fully ambidextrous slide-stop and magazine-release controls.

What's the capacity, and how does California's magazine law apply?

This model ships with a 15-round flush-fit magazine, with a 22-round extended magazine also available for the platform (23 rounds total with one chambered). California caps detachable magazines at 10 rounds for sale and possession in the state, so both the 15-round and 22-round factory magazines exceed that limit substantially, and California also maintains its own roster of handguns cleared for retail sale. Confirm compliant magazine options and current roster status for this model directly with your FFL before ordering.

How does delivery work for a pistol at this price point?

As a firearm, the 510 Tactical ships to a licensed FFL dealer for pickup, not to your home address, where you'll complete a background check and the standard transfer paperwork.

At 32 ounces unloaded and 8.3 inches overall, the 510 Tactical is built as a genuine duty-size pistol rather than a compact carry gun, and FN's decision to support this many optic footprints directly on the slide — rather than requiring a single proprietary plate system — gives buyers real flexibility in choosing a red dot they already own or prefer. Combined with the threaded barrel, this pistol is built for shooters who want a serious 10mm platform equipped for both optics and suppressor use without aftermarket gunsmithing on either front. For hunters, backcountry carriers, and shooters who specifically want 10mm's power advantage in a modern, accessory-ready package, the 510 Tactical is one of the more complete factory options currently available, and the price reflects the machining work behind that multi-footprint optics cut and the cold-hammer-forged threaded barrel.

FN's decision to support several major red dot footprints directly, rather than the single-plate systems many competitors use, means an owner who already has an RMR from a previous pistol or a Holosun from an AR build can move that same optic onto the 510 Tactical without buying an additional adapter plate first. That kind of cross-compatibility matters more as red dots become standard equipment across a shooter's whole collection rather than a one-off purchase for a single gun. Cold-hammer-forging the barrel, rather than using a button-rifled or cut-rifled process, is also generally associated with longer barrel life and more consistent accuracy over high round counts, which is a relevant consideration for a duty-oriented 10mm likely to see sustained range use and defensive-caliber training.