I experienced a lot of jams when I shot my CAA MCK. I realized that it was the micro red dot sight I put on top of the kit that caused the jams - ejected brass hit the red dot sight, or its base, and bounced back into the ejection port, causing jams. An empty brass even got stuck between the plastic, sorry, polymer frame and the pistol slide.
The kit ran okay after I removed the red dot sight, and used iron sights only.
The kit ran okay after I removed the red dot sight, and used iron sights only.




















































