The AR associated with this issue is a ZM Weapons Piston AR. It does not have a "Normal" bolt carrier as the bolt carrier does not go back into the stock. Since it is a piston driven bolt there is no gas that gets all the way back to the bolt carrier like a normal AR.

There is virtually no bolt tension within the bolt carrier. I did a ghetto rework on the three gas rings to expand them a little bit. This created more bolt to bolt carrier tension and it takes more effort to move the bolt back and forth. I am going to test fire it tomorrow to see if it makes any difference. If it does make a difference then I will order up some new gas rings and see if that is a long term solution.