CAT Devices Magnetic Mounts for Pistol Red Dot Sights
CAT Devices mounts provide an innovative solution for fitting a red dot sight to a compatible pistol quickly and securely. The CAT SM2 system combines a mechanical platform with a high-strength magnetic interface, allowing an optic to be installed without permanently machining the pistol slide for a particular footprint.
This category includes different versions of the CAT SM2 mount for Glock, Glock MOS, Glock Slim, CZ Shadow 2, HK USP Compact and Tanfoglio Stock III pistols. Depending on the pistol and product reference, versions are available for optic footprints including RMR, RMSc/RMS and DeltaPoint Pro.
If you still need to select a compatible optic, browse our range of red dot sights. You can also compare other solutions in our collection of scope and optic mounts.
How Does a CAT Devices Magnetic Mount Work?
A CAT Devices mount does not rely on magnets alone. The system uses a pistol-specific mechanical platform equipped with a high-strength magnetic interface onto which the compatible optic is fitted.
Depending on the pistol model, the mount may be installed in place of the factory rear sight. This allows a red dot sight to be fitted without permanently milling the slide for a particular optic footprint. The precise installation method depends on the CAT SM2 version and the pistol for which it was designed.
Three levels of compatibility must be checked before purchasing:
- Pistol compatibility: manufacturer, exact model, configuration, generation and, where specified, slide width.
- Mount compatibility: the exact CAT SM2 version designed for that pistol.
- Optic compatibility: the red dot footprint, such as RMR, RMSc/RMS or DeltaPoint Pro.
CAT SM2: Pistol-Specific Red Dot Mounts
The CAT SM2 range includes several versions and generations designed for specific pistols. A mount intended for a Glock MOS is not automatically compatible with a standard Glock 17. Likewise, a CAT SM2 designed for a CZ Shadow 2 cannot be fitted to an HK USP Compact simply because both red dot sights use the same footprint.
Descriptions such as Gen3, MOS, Slim, 22 mm and 25.5 mm are therefore important product specifications. They must be checked alongside the exact pistol model and the footprint of the optic.
Available CAT SM2 Compatibility Guide
| Pistol or platform | CAT SM2 version | Available footprints | What to check |
|---|---|---|---|
| Glock | CAT SM2 Gen3 | RMR or RMSc | Pistol model, generation and footprint |
| Glock 17 / Glock 19 | CAT SM2 | RMR, RMSc or DeltaPoint Pro | Exact pistol configuration and optic compatibility |
| Glock MOS | CAT SM2, 25.5 mm | RMR or RMSc | MOS version, stated width and footprint |
| Glock Slim G43 | CAT SM2, 22 mm | RMR or RMSc | Slim configuration and stated width |
| CZ Shadow 2 | CAT SM2 | RMR or RMSc | Exact Shadow 2 version and footprint |
| HK USP Compact | CAT SM2 | RMR or RMSc | USP Compact model and footprint |
| Tanfoglio Stock III | CAT SM2 | RMR or RMSc | Stock III version and footprint |
Important: this table is provided as a general guide. The full product name and technical specifications of the individual CAT Devices reference should always be used to confirm compatibility.
CAT Devices Mounts for Glock Pistols
CAT Devices offers several solutions for Glock pistols. These include mounts for the Glock 17 and Glock 19, versions for Glock MOS pistols, mounts associated with particular generations and specific configurations for narrower Glock Slim models.
Before selecting a CAT SM2 mount for a Glock, check the following:
- exact Glock model;
- pistol or mount generation specified;
- standard, MOS or Slim configuration;
- stated width, where applicable;
- red dot sight footprint.
CAT SM2 Mount for Glock MOS
The CAT SM2 for Glock MOS is intended for compatible Glock MOS configurations. The available range includes versions with a stated width of 25.5 mm and variants for RMR and RMSc footprints.
The MOS designation alone is not sufficient to establish compatibility. The exact Glock model, mount dimensions and optic footprint must also match the selected product reference.
CAT SM2 Mounts for Glock 17 and Glock 19
Specific CAT SM2 mounts are also available for the Glock 17 and Glock 19. Depending on the individual reference, versions may be offered for RMR, RMSc or DeltaPoint Pro footprints.
Do not select a mount using the pistol name alone. The generation, pistol configuration and exact optic footprint must also be checked.
CAT SM2 Mount for Glock Slim G43
Narrower pistols such as the Glock G43 require a specific Slim version. The corresponding CAT SM2 is listed with a width of 22 mm and is available in different variants according to the optic footprint.
A Slim mount must not be confused with a standard or MOS version. Always check the full product description and stated width before ordering.
CAT SM2 Mount for CZ Shadow 2
CAT Devices offers a CAT SM2 specifically designed for the CZ Shadow 2. It allows a compatible red dot sight to be installed through the CAT mounting system without permanently milling the slide for a particular optic footprint.
Versions are available for RMR and RMSc footprints. Both the exact pistol configuration and the optic footprint must be confirmed before purchase.
CAT SM2 Mount for HK USP Compact
The CAT SM2 mount for the HK USP Compact is designed around the geometry of this particular pistol platform. Depending on the product reference, versions are available for red dot sights with RMR or RMSc footprints.
Sharing the same optic footprint does not make mounts for different pistols interchangeable. The pistol-side interface must be explicitly designed for the HK USP Compact.
CAT SM2 Mount for Tanfoglio Stock III
A dedicated CAT SM2 version is also available for the Tanfoglio Stock III. Selection must take both the exact pistol platform and the footprint of the intended red dot sight into account.
Depending on the available product reference, you can choose between RMR and RMSc versions. Always check the full technical description before placing an order.
What Is the Difference Between RMR, RMSc and DeltaPoint Pro?
RMR, RMSc and DeltaPoint Pro are different optic mounting footprints. The footprint determines features such as screw position, locating-lug arrangement and the dimensions of the contact surface between the optic and its mount.
- RMR: a widely used footprint for various standard-size red dot sights.
- RMSc/RMS: a more compact footprint commonly found on narrower optics and compact pistols.
- DeltaPoint Pro or DPP: a separate footprint with different mounting dimensions and attachment points.
Similar external dimensions do not guarantee compatibility. The CAT SM2 version must be expressly designed for the footprint used by the red dot sight.
Does the Pistol Slide Need to Be Milled?
One of the main advantages of the system is that it normally avoids the need for permanent slide milling for the optic footprint. Depending on the pistol and CAT SM2 version, however, the factory rear sight may need to be removed or replaced with a component designed for the CAT system.
The mount is therefore not completely independent of the pistol. It must still be correctly installed on the intended firearm. If you are unfamiliar with rear-sight removal or do not have the correct tools, installation should be carried out by a qualified gunsmith.
Does the Optic Retain Its Point of Impact After Removal?
The CAT system is designed to allow a compatible optic to be removed and repositioned with a high degree of repeatability. Actual point-of-impact repeatability depends on correct installation, the condition of the contact surfaces, the use of the correct CAT version and the proper repositioning of the optic.
After removing and refitting a red dot sight, always check the point of impact and confirm zero at a suitable shooting range. This verification is advisable with any detachable or quick-release mounting system.
How to Choose the Correct CAT Devices Mount
- Identify the pistol: confirm the manufacturer, exact model and configuration.
- Check the generation: establish whether the reference is intended for a particular pistol or CAT mount generation.
- Distinguish between standard, MOS and Slim: these configurations must not be treated as interchangeable.
- Check the dimensions: measurements such as 22 mm or 25.5 mm must match the intended configuration.
- Identify the footprint: consult the red dot sight specifications to determine whether it uses RMR, RMSc/RMS, DeltaPoint Pro or another footprint.
- Compare the full product reference: place an order only when both pistol and optic compatibility have been confirmed.
Advantages of CAT Devices Magnetic Mounts
- Pistol-specific solutions for several firearm platforms.
- Quick fitting and removal of a compatible optic.
- Mechanical platform with a high-strength magnetic interface.
- No permanent slide milling for the optic footprint normally required.
- Versions for RMR, RMSc/RMS and DeltaPoint Pro footprints.
- Solutions for Glock, CZ Shadow 2, HK USP Compact and Tanfoglio Stock III.
- An alternative for shooters who do not want to commit their pistol slide permanently to a single optic footprint.
Frequently Asked Questions About CAT Devices Mounts
What is a CAT Devices magnetic mount?
It is a pistol-specific mounting system for compatible red dot sights. The CAT SM2 combines a mechanical platform with a high-strength magnetic interface.
Which pistols are compatible with CAT SM2 mounts?
The current range includes versions for Glock 17, Glock 19, Glock MOS, Glock Slim G43, CZ Shadow 2, HK USP Compact and Tanfoglio Stock III. Exact compatibility always depends on the individual product reference.
Will one CAT SM2 mount fit every Glock?
No. The Glock model, generation, standard, MOS or Slim configuration, any stated dimensions and the optic footprint must all match the mount.
What do RMR, RMSc and DPP mean?
They refer to different optic mounting footprints. Each footprint defines the dimensions and arrangement of the mounting points between the red dot sight and the mount.
Does the slide need to be milled for a CAT SM2?
Permanent slide milling for the optic footprint is not normally required. Depending on the pistol, the factory rear sight may still need to be removed or replaced.
Can the same mount be used for RMR and RMSc sights?
Only when the product specification expressly states this. RMR and RMSc are different footprints, and separate CAT SM2 versions are generally required.
What is the difference between CAT SM2 and CAT SM2 Gen3?
These names identify different versions or generations of the mounting system. They should not be treated as interchangeable without checking the complete product specifications.
Will the red dot retain zero after removal?
The system is designed to provide good repeatability, but the point of impact should always be checked after removing and refitting the optic.
How do I identify the correct CAT SM2?
Check the exact pistol model, generation and configuration, any stated dimensions and the red dot sight footprint. All these details must correspond to the same CAT Devices reference.
Should a gunsmith install the mount?
If installation requires the rear sight to be removed or replaced and you do not have the correct tools or experience, use a qualified gunsmith.
Choose the Correct CAT SM2 for Your Setup
Compare the pistol model, generation, configuration, stated dimensions and optic footprint before selecting your CAT Devices mount.
If you are unsure, our team can help you check compatibility between your pistol, CAT mount and red dot sight.
