Your EDC just got better with the all-new FN 509 Midsize MRD.
This evolution of the FN 509 Midsize now featuring the FN Low Profile Optics Mounting System gives you the option of direct mounting more than 10 different miniature red dot optics to your concealed carry pistol. The FN 509 Midsize MRD features a four-inch barrel and slide with optics mounting package a midsized frame standard 10-round capacity and is compatible with larger capacity FN 509 magazines with use of a sleeve. The improved controls aid in manipulation the new improved texturing on the two included backstraps provides better recoil management and a new flatter faced trigger allows for more controllable trigger press and cleaner break.
FN 509 Midsize MRD Handgun 9mm Luger 10rd Magazines (2) 4″ Barrel FDE NMS
$694.00
3 in stock
BJ Firearms LLC is a federally licensed firearms business focused on providing quality firearms, accessories, and related services while promoting responsible ownership, education, and community engagement.
The company was founded to serve firearm enthusiasts with knowledgeable service, real-world experience, and a commitment to professionalism and safety.
We focus on real experience, personalized service, hands-on product knowledge, and community involvement — not just sales. Our goal is to help customers make informed decisions and feel confident with their equipment.
Yes. We operate as a federally licensed firearms dealer (FFL), following all applicable federal, state, and local regulations.
Yes. We partner with trusted suppliers to provide quality products and reliable sourcing.
Yes. We partner with content creators and industry professionals to provide real-world insights and experiences.
We work with everyone — from first-time buyers to experienced enthusiasts. Education and guidance are a big part of what we do.
We offer firearms, accessories, gear, and related equipment depending on availability and customer needs.
Yes. We help customers evaluate their needs, experience level, and intended use to find the right fit.
Yes. Depending on the request, we can help source specific products or assist with custom configurations.
Yes. We actively engage in hands-on experiences, demonstrations, and community-related firearm activities when possible.
Yes. We support content that helps people learn about equipment, safety, and responsible firearm ownership.
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