Apex Optic Mount for FN MRD Pistols to mount RMR Footprint Optics

The Apex Optic Mount for FN MRD Pistols lets you mount a red dot with an RMR footprint directly to your factory FN slide. Designed for use with the FN Low Profile Optics Mounting System™, this mount is a straight swap for the factory cover plate on any FN pistol that has the MRD optic cut. No extra adapters or key inserts needed — it bolts right on and you are ready to zero.

Key Specs & Fitment:

• Mounts optics with an RMR footprint (Trijicon RMR, Holosun 407C/507C/508T, Swampfox Justice, and similar patterns) to FN MRD slides.
• Compatible with FN 509 series, FN 510, FN 545, and other current FN pistols that use the factory low profile mounting system.
• Steel construction for solid retention under recoil — no polymer, no flex, no lost zero.
• Direct slide mount — no MRD key insert required. Drops in with the same screws used for the factory cover plate.
• Screws come with a factory-applied high-temperature thread locking patch. No liquid thread locker needed — just torque them down and go.
• Low profile design keeps the optic close to the slide for a clean co-witness with standard height sights.

Real Benefits for Your Setup:

• No extra parts to buy. No filler plates, no adapter kits, no special tools. Buy the mount, grab your optic, and mount it to your slide in minutes.
• Saves time and hassle. The pre-applied thread lock patch means you don’t have to mess with small bottles of liquid thread locker that get messy or dry out. Just torque the screws and shoot.
• Solid zero retention. Steel mount holds the optic tight against the slide. You won’t have to re-zero after a few hundred rounds or after dropping the gun.
• No gunsmith needed. If you can unscrew the factory cover plate and screw in a mount, you can install this. Straightforward, no fitting required.
• Keeps your optic low. You won’t need suppressor-height sights unless you want them for a lower 1/3 co-witness. The mount sits flush with the slide cut.
• Works with your existing holster. Because it replaces the factory plate and adds minimal height, most holsters that fit your FN with the factory