Description
The CZ Scorpion EVO 3 uses an M18x1 right-hand thread that doesn't line up with Gemtech's standard suppressor interface out of the box. This threaded rear mount solves that. It swaps onto the back of a GM-9, Multimount, or Lunar-9 can and converts the Scorpion's factory thread pattern over to Gemtech's mounting standard, so your suppressor threads on directly with no guesswork.
How the Scorpion Rear Mount Works
Think of this as an endcap adapter that lives on the rear of the suppressor. It's built for direct-thread use on fixed-barrel hosts like the Scorpion EVO carbine and other SMG-style platforms, which means no booster or piston is needed since the barrel doesn't reciprocate. That direct-thread setup keeps alignment consistent shot after shot and makes mounting fast and repeatable when you're moving a can between hosts.
Fit, Finish, and What It Threads Onto
Gemtech machines these mounts to spec, so the threads engage cleanly and the can indexes where it should. The M18x1 RH pitch is the correct match for the CZ Scorpion EVO 3 S1, and the adapter carries over to the GM-9, Multimount, and Lunar-9 family of Gemtech suppressors. One thing worth knowing: this is a fixed-barrel solution. Most tilting-barrel handguns need Gemtech's LID mount instead, so this rear mount is really at home on a threaded Scorpion or similar carbine.
Why Scorpion Owners Reach for This Mount
If you already run a Gemtech 9mm can and picked up a Scorpion, this is the piece that ties the two together without hunting for a workaround. It's a small part that does one job well, and it does it without adding bulk or complexity to your setup. Slip it on, thread your suppressor down, and get back to shooting quiet.
Key Specifications
- Manufacturer: Gemtech
- Manufacturer Part Number: 12181
- UPC: 609224347221
- Thread Pitch: M18x1 RH
- Host Compatibility: CZ Scorpion EVO 3 S1
- Suppressor Compatibility: Gemtech GM-9, Multimount, Lunar-9
- Mount Type: Direct-thread rear mount / endcap adapter
- Intended Use: Fixed-barrel carbines and SMG-style platforms
- Finish: Matte black
- Product Type: Silencer Accessory
- Shipping Weight: 0.2 lb
What’s Included
- Gemtech Threaded Rear Mount adapter (M18x1 RH)
Frequently Asked Questions
Which suppressors does this Gemtech rear mount work with?
It's designed for the Gemtech GM-9, Multimount, and Lunar-9 suppressors. The adapter threads onto the rear of the can and converts it to the M18x1 RH interface. Owners have also reported success running it with a Lunar-9 setup.
Will this fit my CZ Scorpion EVO?
Yes. This mount is cut for the M18x1 right-hand thread pattern used on the CZ Scorpion EVO 3 S1. As long as your Scorpion has that factory thread pitch, this is the correct adapter to pair it with a compatible Gemtech can.
Do I need a piston or booster with this rear mount?
No. Because the Scorpion is a fixed-barrel platform, the barrel doesn't move during cycling, so a recoil booster isn't needed. This is a direct-thread setup, which keeps things simple and keeps alignment consistent.
Can I use this rear mount on a handgun?
This adapter is intended for fixed-barrel carbines and SMG-style hosts rather than tilting-barrel pistols. Most handguns require Gemtech's LID mount to function properly. For a threaded Scorpion carbine, though, this rear mount is exactly what you want.





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