Quote Originally Posted by Bayman View Post
I removed the Vortek kit, inspected the comp tube and piston seal for damage and installed an ARH spring kit with the OE piston liner. Test fired without a scope and the gun sounds normal now. Ten shot string of 5.53 FTTs, 735 fps ES 12 and SD 3. That's 17.58 fpe. That's about what I remember that kit doing last time.

Assuming the noise doesn't return I'd have to think the noise was from the Vortek steel outer guide resonance. I have to do some more testing with a scope on it.

Thanks all for the help
Ron
Quote Originally Posted by Bayman View Post
Thanks for the offer. I appreciate it. I'm out of the woods with this thing. I shot it a bunch today. The noise didn't return. It's a much more enjoyable gun now. Besides losing the annoying ping noise, it cocks and shoots smoother. I couldn't check if the accuracy changed as the winds were strong, gusting and from random directions.

As long as the gun is accurate, I'd be ok if this gun stays shooting this way.

Be well all.

Excellent stuff. Glad it's sorted. Enjoy.