I got my AAC rebate today and started looking at mounts on the website for the 762-SDN-6 that I am waiting impatiently for. Since my Form 1 came back super fast I have a KX5 on my 10.5 inch 5.56 that I was going to replace with a 51t brake that my dealer recommended. Since I got the .30 caliber can I started piecing together parts for a 300 blackout upper, my question is whether I should try the AAC Breakout 2 on the 300 and 5.56 uppers? Does it ping like I've been hearing the flash hider does? Anyone running one of these probably for now I will mostly be running the 300 blackout upper with the suppressor and maybe just leave the KX5 on the 556 upper since it works well and I have accumulated a bunch of brass and bullets for the 300.