The cases do tend to stick in my Carbon 15, and another AR build I did. But, if I squirt a little oil on the cases, keep the chamber clean and not rapid fire, the steel stuff is about 95%. In other words, "good enough".
I'm sorry but that just cracks me up . There are firearms I own that keeping the chamber very clean , lubing the cases , counting one-one thousand between shots and the rifle still only working 95% of the time IS NOT good enough . That would be any AR or HD/SD firearms .