Problem here.
My mag is running away on full auto as soon as it's gassed up. Even on safe.
Took it apart to inspect, and noticed the sear catch was bent. The end facing the valve.
Straightened it, but it didn't seem to fix the problem.
Another thing I noticed: Usually when removing the valve after you've removed the field-strip screw, you have to press trigger to hear that little click to release the valve. Doesn't do that with the zgrip. What's going on here?