Accessories for FN

FN Herstal is a Belgian arms manufacturer producing the FN 509 and related models in a polymer striker-fired format. The 509 series -- available in compact, midsize, tactical, and MRD (optics-ready) configurations -- is used in both law enforcement and practical shooting competition.

Upgrades for FN pistols

FN pistols — among them the FN 509 and FN 545 — can be tailored across the main competition upgrade areas:

• Grips – panel texture and frame profile change how consistently your hand returns to the gun, the foundation of recoil control and a repeatable draw. The FN 509 is a common example.
• Triggers – a refined trigger sharpens the break and shortens the reset, so shots break where you expect and you are back on the sights sooner.
• Sights and red dot mounts – upgraded irons or a slide-mounted optic give a single focal plane and faster acquisition from the holster and between targets. The FN 545 is a common example.
• Magwells – a wider, chamfered magazine well makes the reload more forgiving under stage pressure.
• Base pads – extended pads add capacity and a little weight at the base of the magazine, and help it seat reliably.
• Frame mounts and weights – added forward weight settles the muzzle and improves balance, particularly in Open setups.
• Magazine releases and thumb rests – an extended release speeds mag changes without breaking your grip, and a thumb rest gives a fixed hand reference.

Compatibility is specific to each FN model and generation — confirm the fit on the individual product page before ordering.