Apropos of nothing, this is a common problem and a nifty solution. Does your brass get beat up hitting the deflector when it ejects?

Deflector Brake by Jack Keil. Not only does it cushion the impact, the brass drops in a neat pile a few feet away.

Just make sure you position it far enough back so that it does not interfere with the dust cover. Live and learn.
They are now on all of my AR platforms. Assuming that I have more than one.