FN 309 MRD 9mm 3.8″ | Optic-Ready | 16 & 20rd Mags | 66-102366

The FN 309 MRD is a compact, optics-ready 9mm pistol built with a polymer frame and a 3.8" alloy steel barrel. The design emphasizes ease of use: low racking force, a single-action trigger feel from an internal hammer system, and a slide cut that accepts common MRD-style footprints. For an optic under $1000 that pairs directly with the 309 MRD, consider the Leupold DeltaPoint Pro, which matches the pistol’s DeltaPoint Pro / RMSc-compatible mounting options.

Real-world applications for the 309 MRD include duty or professional carry and focused range training. Its combination of a compact barrel, optics-ready slide, accessory rail, and included magazines supports practical use in those roles.

Product Specifications

• The caliber is 9mm Luger.
• The barrel measures 3.8 inches.
• The frame material is polymer in a black finish.
• The slide finish and color are black.
• The pistol is supplied with one 16-round and one 20-round magazine.
• The platform is optics-ready and compatible with Leupold DeltaPoint Pro and Shield RMSc footprints.
• The front sight is an over-molded green fiber-optic with a rounded U-notch rear.
• The pistol includes an integrated accessory rail for lights and lasers.
• The trigger operation is described as an internal hammer-fired single-action with an approximate ~5 lb trigger pull.
• The overall length is 7.4 inches.
• The unloaded weight is listed as 22.5 oz.
• The pistol ships compatible with common Streamlight TLR-7-class lights.
• The magazine release is reversible to accommodate left- or right-handed shooters.
• UPC: 845737020583.

Compact and purpose-built, the FN 309 MRD combines a short 3.8" barrel and a polymer frame with an optics-ready slide to deliver a modern, practical carry pistol. Its included magazines and factory sighting package let you get on-target quickly, and the RMSc/DPP-compatible cut makes adding a red dot straightforward. The ergonomics, textured grip, and accessory rail make the 309 MRD a versatile platform for users who want an optics-ready compact 9mm without unnecessary complication.

Owners and reviewers commonly note that the slide racks with less effort than comparable pistols and that the trigger exhibits a crisp, single-action feel; many also praise the convenience of the optics-ready slide and the inclusion of both 16- and 20-round magazines.

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