Not ejecting. Once when I had help watching it tried to open a little. Called AR parts and they recommend cutting a coil off the buffer spring one at a time until it cycles but not more than 3 coils. He said my buffer was correct weight and if cutting coils didn’t work to get back with him and he has a pistol buffer that for sure will work. The bolt stays in place with the dust cover shut. Moves back when open as it’s designed. No issues there. AR parts got back with me within a day of my email and were very helpful. Thanks for your help as well campfire. Let you know when it’s running smooth. Too many holiday get togethers last few days to play with the 9 lately.