Foxtail Red Dot Adapter100005 Adptr Plate Glk43X/48 Hc 407K

The Foxtail Precision red dot adapter plate is a direct-fit mounting solution for Glock 43X and 48 pistols equipped with the MOS (Modular Optics System) cut. Built for shooters who want to add a compact red dot sight—like the Holosun 407K—to their carry or defensive pistol, this adapter bridges the gap between your slide's optics-ready footprint and your choice of optic. Black anodized aluminum construction provides a durable, corrosion-resistant base that sits flush with your MOS-compatible slide.

Installation is straightforward: the adapter plate mounts directly to your Glock 43X or 48 MOS slide using the existing mounting holes, then your red dot attaches to the plate. This approach gives you the flexibility to run your preferred sight without permanent modification to your firearm. Whether you're setting up a duty gun, a competition rig, or an EDC pistol, a quality adapter ensures solid optic mounting and repeatable zero.

Foxtail Precision holds tight tolerances on their mounting solutions, so your optic sits secure and indexed correctly. If you're looking to modernize a Glock 43X or 48 with optics and already have the MOS cut, this adapter plate is the efficient next step.

Key Features

• Direct-fit adapter plate for Glock 43X and 48 MOS pistols
• Black anodized finish for durability and corrosion resistance
• Mounts directly to your slide's optics-ready footprint
• Accepts compatible red dot sights such as the Holosun 407K

Specifications

Frequently Asked Questions

Will this adapter plate fit my Glock 43X or 48?

This adapter is designed specifically for Glock 43X and 48 pistols with the MOS (Modular Optics System) slide cut. If your gun has the MOS footer, the adapter will mount directly to those holes.

What red dot sights work with this adapter?

The Holosun 407K is confirmed compatible. Other compact red dot sights designed for MOS-cut pistols should work as well, but verify your optic's footprint before purchase if you're unsure.

Is this a permanent modification to my gun?

No. The adapter plate is removable—it bolts to your slide's existing MOS holes and can be taken off if needed. Your slide is not drilled or permanently altered.