I had the Spikes R2 Muzzle brake on my AR It was not overly obnoxious, and It was very effective in keeping the muzzle on target.
https://www.spikestactical.com/collections/muzzle-devices/spikes-tactical-r2-brake/I switched over to a SilencerCo ASR brake as I am waiting on a suppressor. The ASR seems a little louder than the Spikes.