The Holosun 407K/507K adapter plate for Glock MOS pistols (Holosun part no. KPLT-MOS9MM) lets Holosun K-series micro pistol optics mount on Glock MOS-compatible slides. It is designed for the 407K and 507K and adapts their K footprint to the MOS 9mm optics-ready slide cut. The plate is CNC-machined from 7075-T6 aluminum with a hard-anodized finish, and its low-profile design keeps the optic close to the slide. It is a purpose-made part for owners who want to put a compact Holosun red dot on a Glock MOS from Holosun.

Key Specifications

• It adapts Holosun 407K and 507K series optics, the compact K-footprint red dots.
• It fits Glock MOS 9mm optics-ready pistol slides.
• The plate is 7075-T6 aluminum, a lightweight and durable alloy.
• The finish is hard anodized, which improves resistance to wear and corrosion.
• The plate is CNC machined, which keeps the optic aligned and stable on the slide.
• A low-profile design positions the optic close to the slide to preserve a natural sight picture.
• It is designed specifically for the Holosun K footprint for a precise, secure interface.

Frequently Asked Questions

Which Holosun optics does this plate fit? It is designed for the Holosun 407K and 507K micro pistol optics, which use the K footprint.

Which pistols does it fit? It is made for Glock MOS optics-ready slides in 9mm.

Does it add much height? Holosun describes it as a low-profile adapter that keeps the optic close to the slide so the sight picture stays natural.

Buy the Holosun 407K/507K Adapter Plate for Glock MOS Pistols

Matching an optic’s footprint to the slide cut is the first step in any red dot install, and a purpose-made plate removes the guesswork on a Glock MOS. Order it from our Lubbock, Texas gun shop for fast shipping, and look through more red dot mounts for your build.