C+H Red Dot Mounting Plate for Glock 43X/48 MOS - Ultra Thin Fit

Our review of the C+H Red Dot Mounting Plate for Glock 43X/48 MOS finds it best suited to owners who want a low-profile, well-machined adapter for Holosun micro red dots. The single biggest reason to buy is the patented ultra-thin construction that reduces height over bore, helping quicker follow-up shots while keeping the slide geometry consistent. Installation is straightforward for anyone comfortable with basic pistol work, and the precision machined aircraft aluminum construction and MIL-SPEC Type III hard coat anodizing give it a noticeably solid feel compared with generic plates.

Key Features

• Compatibility: Specifically made for Glock MOS 43X/48 MOS so fitment is precise when used on the correct models.
• Optic Fit: Accepts Holosun 407K, 507K and 507K X2 footprints, enabling easy pairing with those popular micro red dots.
• One-Piece Design: The single-piece plate simplifies installation and keeps the optic rigid under recoil for consistent sighting.
• Ultra Thin Profile: The patented thin profile reduces height over bore to aid faster target reacquisition and maintain natural sight picture.
• Durable Finish: Crafted from aircraft-grade aluminum and MIL-SPEC Type III hard coat anodized for corrosion resistance and long service life.

Who It's For

This plate is aimed at Glock 43X and 48 MOS owners who plan to mount a Holosun 407K, 507K, or 507K X2 and want a minimal height increase over the slide. If you prioritize a slim, precisely machined mounting solution and prefer a one-piece plate that installs quickly, this is a sensible choice.

Those who own a standard G43, any non-MOS model, or different optic footprints should look elsewhere, since the plate is explicitly not compatible with G43 or other Glock models. Also consider alternative mounts if you need multi-brand footprint compatibility beyond the listed Holosun models.

Pros & Cons

Pros

• Excellent fit and build quality for Glock 43X/48 MOS as reported by users who noted secure optic mounting.
• Ultra-thin design reduces height over bore, which helps with faster follow-up shots and a better sight picture.
• Precision machined aircraft aluminum and MIL-SPEC anodize provide durability and a clean finish.
• Simple one-piece installation makes it quick to fit using the included hardware.

Cons

• Included mounting screws have been reported as too long by several customers, which may require replacing with correct-length screws for a flush fit.
• Compatibility is restricted to Glock MOS 43X/48 MOS only, so it is not a universal solution.

Specifications

Brand	C+H
Compatibility	Glock 43X/48 MOS only
Optic Compatibility	Holosun 407K, 507K, 507K X2
Material	Aircraft-grade aluminum
Finish	MIL-SPEC Type III hard coat anodized
Design	One-piece ultra thin plate

Our Verdict

The C+H mounting plate is a focused, well-made option for Glock 43X and 48 MOS owners who want a low-profile mount for Holosun 407K or 507K series dots. Its precision machining and thin profile make it a worthwhile upgrade for shooters valuing minimal height over bore and solid build quality; just be prepared to swap the included screws if they prove too long for your optic.

Frequently Asked Questions

Will this plate fit a Glock G43?
No. This plate is only compatible with Glock MOS models 43X and 48 MOS and will not fit G43 or other non-MOS models.

Which Holosun models will mount to this plate?
The plate accepts Holosun 407K, 507K and 507K X2 footprints for direct mounting of those micro red dots.

Are the mounting screws included suitable as-is?
Mounting screws are included, but several users report they are too long; replacing with the correct length screws may be necessary for a proper installation.