Recently picked up a bcm charge handle and a joe bobs bcg and noticed it's starting to wear the finish and writing off the top of the ch. After noticing the wear I started checked for play and it seems excessive, I swapped the ch with another AR of mine with a spikes bcg and it seems no excessive play when with the spikes bcg. So then I checked play on the swapped out ch that's now with the joe bobs bcg and it seems sloppy like the other so my best guess is it has to do with the joe bobs bcg?? Anyone else ever have this issue?