Holosun 407/507K Adapter Plate for Glock MOS - Matte Black

The Holosun 407/507K adapter plate for Glock MOS is a precision mounting solution built to attach red dot optics to your Glock MOS-cut slide. If you're running a Glock 19 or 17 with a factory optic cut and want to mount a Holosun 407K or 507K, this adapter bridges the gap between optic and slide with a solid aluminum foundation that handles the demands of duty carry, competition, or range work.

Built from 6061 aircraft-grade aluminum and finished with Type III hard anodizing, this adapter plate resists corrosion and stands up to the wear and tear of regular use. The matte black finish keeps glare minimal and blends seamlessly with most modern setups. CNC machining ensures tight tolerances and repeatable installation shot to shot.

This adapter is engineered specifically for the Glock 19 and 17 MOS footprint—it will not work on the 43X or 48 MOS models. Pair it with either a Holosun 407K or 507K optic and you've got a compact, reliable red dot setup ready for whatever you throw at it.

Key Features

• Machined from 6061 aircraft aluminum for strength and light weight
• Type III hard anodized matte black finish resists corrosion and scratches
• Designed for Holosun 407K and 507K optics
• Compatible with Glock 19 and Glock 17 MOS slides
• CNC precision manufacturing for repeatable fit and function

Specifications

Frequently Asked Questions

Will this adapter work on my Glock 43X or 48 MOS?

No. This adapter is designed exclusively for the Glock 19 and Glock 17 MOS slides. It will not fit the 43X or 48 MOS footprint.

What Holosun optics are compatible with this adapter?

This adapter is designed for the Holosun 407K and 507K models.

Is the adapter corrosion-resistant?

Yes. The adapter is machined from 6061 aircraft aluminum and finished with Type III hard anodizing, which provides excellent corrosion resistance and durability.