The Holosun 407/507K Adapter for Glock 17/19/45 MOS, Black is a mounting accessory that fits Glock 19/17/45 MOS.
The KPLT-MOS9MM Adapter Plate allows compact Holosun K-series optics such as the 407K and 507K to mount on Glock MOS-compatible pistols.
Its precision-machined aluminum construction and hard-anodized finish provide a secure, low-profile mounting solution for carry, duty, and range use.
How It Compares
Also compare the 509 Adapter for Glock MOS, 407/507K Adapter for HS507C Footprint and 407/507K Adapter for CZ P10. Browse all optics Accessories and the full Holosun range. New to this? Read our guide: Caring for Your Optics: Cleaning and Off-Season Storage.
Ideal For
- Glock 17, 19 and 45 MOS pistols (not the 43X or 48 MOS)
- Mounting a compact Holosun 407K or 507K on a Glock MOS slide
- Carry, duty and range pistols needing a low-profile hard-anodized plate
Key Features
Key Features
- Glock MOS Optics Adapter Plate Allows Holosun 407K and 507K series optics to mount securely to Glock MOS 9mm optics-ready pistol slides.
- K-Series Optic Compatibility Designed to adapt Holosun 407K and 507K footprint optics to Glock MOS platform handguns.
- Precision Machined Construction Manufactured from durable aluminum to ensure proper optic alignment and reliable mounting stability.
- Secure Mounting Interface Engineered to maintain zero through recoil and extended shooting use.
- Low Profile Adapter Design Positions the optic close to the slide to preserve a natural sight picture and consistent presentation.
- Hard Anodized Finish Protective surface treatment improves resistance to wear, corrosion, and harsh environmental conditions.
- Improved Platform Versatility Expands optic compatibility options for Glock MOS pistols using compact pistol optics.
- Lightweight Construction Minimal added weight maintains the balance and handling characteristics of the handgun.
- Holosun Fitment Precision Designed specifically for Holosun K footprint optics to ensure a precise and secure interface.
- Range and Carry Ready Ideal for shooters looking to equip their Glock MOS pistol with compact, high-performance optics.
- Will Not Fit 43X/48 MOS
- 6061 aircraft aluminum construction
- Corrosion-resistant anodized finish
Compatibility & Fitment
Fits Glock 19/17/45 MOS. Not sure it fits? Contact us before you order and we will check for you.
Technical Specifications
Brand | Holosun |
Type | Mounting Accessory |
Model | 407/507K Adapter |
Platform | Glock |
Color | Black |
MPN | KPLT-MOS9MM |
UPC | 810047071136 |
US Shipping & Support
Genuine Holosun, brand new and covered by the manufacturer's warranty. Shipping is free on US orders of $99 or more, and smaller orders ship from $6.95. Questions about fit, mounting or which option suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What does the 407/507K Adapter fit?
Fits Glock 19/17/45 MOS.
Is this a genuine Holosun product?
Yes. It is a new, genuine Holosun product sourced through an authorized US distributor.
How much is shipping?
Shipping is free on US orders of $99 or more. Orders under $99 ship at a flat rate from $6.95 to $9.95, depending on the order total.
