For Holoson – Apex Optic Mount Screw Set for FN MRD Pistols with an Apex mount for RMR Footprint Optics

Description

For shooters running an FN MRD pistol with a Holosun optic mounted on an Apex plate, the factory screws often aren’t the right length or thread pitch for a secure, worry-free fit. This $20 screw set from Apex solves that problem directly. It’s a small investment that eliminates a common point of failure, especially for a concealed-carry gun or a hunting sidearm that gets knocked around.

These screws are specifically machined for the combination of an FN MRD slide, an Apex mounting plate, and any Holosun optic that uses the RMR footprint (like the 407C, 507C, 508T, or 509T). You don’t need to guess or make do with hardware from other kits. The set includes the correct thread locker already applied, so you can install them and trust the optic won’t walk off under recoil. That’s a real benefit for a practical shooter who puts rounds downrange regularly, not just a safe queen.

• Precision fit for FN MRD pistols – Works with Apex mounting plates designed for RMR-footprint optics. No filing, cutting, or improvisation required.
• Correct length for Holoson optics – Avoids the two most common screw issues: bottoming out in the slide (which can crack your optic) or being too short to engage enough threads (which causes the optic to loosen).
• Pre-applied thread locker – Saves you time and ensures consistent torque. You install them dry and get the right retention without needing a separate bottle of Loctite.
• Heat-treated steel construction – Handles the torque needed for a secure mount on a defensive or hunting pistol. These won’t strip out after a few range trips.
• Cost-effective fix – At twenty bucks, this set is cheaper than replacing a damaged optic or dealing with a loose red dot during a carry class or hunt.

If you’re running an FN 509, FNS, or FNX series pistol with an Apex plate and a Holosun, this screw set is the specific hardware you’d build yourself if you had the time and the right specs. It’s a drop-in solution that removes the guesswork. The fitment is tight by design, so the optic sits flush against the plate without any wobble. That’s critical for maintaining zero on a pistol you actually carry or shoot for accuracy.

Simply put: you buy this set, install it, and your Holosun stays put. No stripped screws, no loose optics, no wasted range time troubleshooting a mount that shouldn’t be an issue. For the concealed carry guy who needs his gear to work every time, or