It's well made and quiet, I run mine on an HK45. The AAC Ti-Rant is another option. I run the Ti-Rant on my FNP45T and it's a great combo.
Silencerco has very good customer service. AAC is soso
I have one on a Kriss Super V SBR. While I'm waiting on the Form 4's, I have coaxed my CLASS III dealer to bring the toys over for a little private shoot. I'm VERY happy with that combination.