Weird product - Q HK 3-Lug Mount for ERECT9R 9mm Suppressor

Got one for my Erector9 to mount on my AR9 upon installing the mount its not what you'd think a 3 lug mount would be. mine wasnt concentric with the barrel, I thought it was my fault how I installed the 3lug adapter so I took it to the gunsmith, He tried it and 3 other MP5's that he has and all the same not concentric and has a tiny bit of wiggle. I'm giving Q the benefit and assumed that the thread mount I had was a defect and made it's way past inspection. Another annoying thing is that when they released this product there's no video of them installing it or a instruction manual. HEADS UP it is not a traditional 3 LUG mount there's no spring to compress just 1-unscrew 2-install and twist 3-and tighten. It is different but its too odd for me might just stick with direct mount.