I suppress my .45 FNX45T , my Beretta 92FS , and my Uzi all with my Griffin Rev45 can. I also load 9mm subs and dam you get impressive quietness with subsonic 9mm. My 45 can on a 9mm supersonic is ok, but quite a bit louder than 45acp (which are already subsonic). I wish I could buy a .40 S&W threaded barrel for my newly acquired Sig P226 Elite, but nobody makes one. I could easily get .40 S&W ammo subsonic.