You made me look.
At the end of the day, when you think about it, only a government agency could be so stupid. You would think someone would of been terminated over it for wasting so much money...
Knight’s suppressed sniper revolver rifle was developed by American company Knight’s Armament Co on the order from unspecified American government agency, engaged in various clandestine operations. Said agency required a suppressed (silenced) sniper rifle which would not leave any unnecessary...
modernfirearms.net
Just buy a .45ACP and be done with it when you're keeping it subsonic for the sound signature. I'm an idiot and I could even tell you that.
Seems like the only application was for idiots using taxpayers money