Actually a simple fix.
Go get a pack of velcro fastener tabs, I like the ones in the green packs. Peel one off and after cleaning up the "Brunton Bump" with solvent stick one of the tags there.
Next get black rubber or foam etc and cut into a triangle and mount the opposite Velcro on it and stick it to the "Brunton Bump". Your cases will now drop very close to your rifle and you irritate the folks on the next firing point.
Note the rifle is extra foam stuck under the carry handle for extra pieces of foam and be stored.
This method does not require cutting ejector spring (normally done to correct such) or shortening the ejector itself which is he latest "fix" I am aware of.
On another of my ARs I took expoxy putty and kneaded it together and applied it to the "Brunton Bump" so there was a right angle wall for the cases to contact and this directs them forward. The epoxy putty I got was white so I painted it black. I also put 1/8" thick piece of the dense foam on the front. Cases are picked up and look like they came from a bolt action rifle, mouths are not bent and case bodies don't look like they have been center punched on the side. I did this about 8 years back and the expoxy putty is still attached to the rifle.
Finally found my better pics of what I did above. One is slightly out of focus but gives the gist of the modification. The foam one I figure I have 30 cents in. The expoxy putty about $4.00. Obviously not a pretty but very effective in protecting cases from damage.
If the "Brunton Bump had been designed initially with the right angle contact this problem would have never surfaced. At the time he was just interested in deflecting brass away from the right cheek of left handed shooters and it works fine for that but changed ejection to 12 to 4:00 o'clock inclusive of Daylight Savings Time ! ! ! !.
A better pic of the cheap fix and a kit will allow you to fix all your ARs at once ! ! ! ! .