The FN 509 MRD full-size pistol stands as a testament to modern engineering and design, offering users a formidable option for personal or home defense. At its core, this impressive firearm is chambered in the ever-reliable 9mm caliber, ensuring widespread ammunition availability and manageable recoil. The heart of this pistol is its 4.5-inch cold hammer-forged barrel, crafted from FN's proprietary machine gun-grade stainless steel—an assurance of durability and longevity that few others can claim.
What sets the FN 509 apart is its patented Low-Profile Optics-Mounting System. This feature allows operators to seamlessly integrate their preferred optics without compromising the sleek profile of the weapon—a crucial advantage in high-pressure situations where precision matters most.
Attention to detail continues with the inclusion of a recessed target crown at the muzzle end, designed specifically to protect rifling integrity over time while maintaining top-tier accuracy throughout countless rounds fired. Additionally, both slide and frame are full-sized, contributing not only to an enhanced grip but also aiding in reducing felt recoil due to their increased weight and length.
This striker-fired mechanism operates without a manual safety—streamlining operation for those who prioritize speed under duress yet demand consistent reliability above all else. With an ample capacity of 17+1 rounds on tap, it’s clear that every aspect of this firearm has been meticulously engineered by FN Herstal for those who refuse compromise when it comes to defending what matters most.
Features
- low profile mounting system
- hammer-forged stainless barrel
- fullsize frame
- fn low-profile optics mounting system
- aggressive slide serrations for positive manipulation
- external extractor and loaded chamber indicator
- 4.5-in. cold hammer-forged stainless steel
- enhanced grip texture which enables faster follow-up shots in all conditions
- interchangeable backstraps
- mil-std-1913 accessory mounting rail
- fully ambidextrous slide stop lever and magazine release
- includes fn soft case, optics mounting system, two backstraps and (2) 17 round magazines