The CZ Scorpion EVO Trigger Pack Ergon represents a high-performance upgrade to the trigger mechanism for the popular CZ Scorpion EVO 3 and CZ Scorpion EVO 3+ firearms.
The two-stage pull—take-up and break—allows for more precise shot placement and greater control over the firearm's operation. The lighter trigger provides a smoother press during activation.
A shorter reset reduces the trigger’s return time, thereby speeding up the ability for subsequent shots.
The Ergon trigger pack is made from high-quality stainless steel by the Czech manufacturer Ascalon. It includes an M4x10 screw and two Allen keys for installation, allowing you to replace the mechanism easily by following our guide.
How to replace the trigger pack on the CZ Scorpion Evo
Step by step guide:
- Ensure that the chamber is empty and leave the bolt open.
- Press out the retaining pin and remove the lower receiver.
- Loosen the trigger pack screw using the included 3mm [1/8 inch] Allen key. The screw may be tightly fastened, so use a screwdriver for better leverage.
- Switch the safety selectors to the fire position and unscrew the set screw using the 1.5mm [1/16 inch] Allen key, which is also included in the package.
- Remove the safety selector and take out the safety shaft.
- Remove the original trigger pack screw and replace it with the new one that is included with the Ascalon pack.
- Insert the new pack into the trigger housing. Be cautious when inserting the module to avoid bending the metal bracket, as the trigger may not function properly if it is bent.
- Lightly tighten the trigger pack screw to hold it securely in place.
- Reinsert the safety shaft and the safety selector, and screw back the set screw.
- Properly tighten the trigger pack screw.
- Reattach the lower receiver, and you’re done.
Installation video guide
We also made a quick installation video for the CZ Parts YouTube channel.
