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

Description

The Apex Optic Mount for FN MRD Pistols is a direct-fit mounting solution for shooters who require a rugged, repeatable connection between their pistol and an RMR-footprint red dot. This unit is engineered specifically for FN USA slides that utilize the FN Low Profile Optics Mounting System™, including the MRD optic mount cut. It provides a solid foundation for competition shooters, duty rigs, and serious upgrades where optic retention under recoil is non-negotiable.

Each mount ships with screws that feature a pre-applied High-Temperature Thread Locking patch. This built-in patch eliminates the need for messy liquid thread lockers, saving time during installation and reducing the risk of over-application or solvent damage to polymer components. The result is a vibration-resistant hold that stays tight through extended range sessions and high-round-count courses.

Key benefits for the serious shooter:

• Direct slide mount: The Apex mount attaches directly to the factory FN slide without requiring an MRD Key Insert. This reduces parts count, simplifies installation, and maintains a lower overall height compared to adapter-plate systems.
• RMR footprint compatibility: Accepts optics with the standard RMR footprint, including popular models from Trijicon, Holosun, and others. This gives you flexibility to run your preferred dot without proprietary hardware.
• Pre-applied thread locking patch: Factory-installed patch on all mounting screws provides consistent torque retention and heat resistance. No liquid thread locker required, and no cleanup after installation.
• Robust construction: CNC-machined from billet material to precise tolerances, ensuring a zero-shift fit that holds zero through repeated slide cycles and impacts.

Specs & fitment: This optic mount is designed for FN MRD pistols—specifically the FN 545 and other FN USA slides with the Low Profile Optics Mounting System cut. It mounts the optic directly to the slide deck, keeping the optic as low as possible for co-witness with factory iron sights (dependent on optic height). The pre-applied thread lock patch is rated for high-temperature conditions, making it suitable for suppressed use or extended strings of fire where heat buildup can compromise standard thread locker performance.

At $70, this mount delivers a direct, no-adapter solution for shooters who demand reliability under stress. Whether building a duty rig, a competition race gun, or a serious personal defense setup, this mount provides the secure interface needed to keep your dot zeroed. No extra keys, no liquid thread locker, no guesswork—just a solid mechanical lock between your FN pistol and your optic.