If you are a ninja, then worry about stealth. If you a realistic Amreican sport shooter, it isn't an issue.
Whenever the subject of suppressors comes up, people forget common sense and shift right into the mode of their favorite secret agent terminating the enemy agent with extreme prejudice at a coctail party in Geneva while everyone else dances the tango. This kind of BS bleeds over into what were intended to be serious discussions on internet gun forums all the time.
In reality, we buy suppressors so that we can shoot without hearing proection, and so we can shoot without grief from neighbors. Real suppressors arn't silent and they don't need to be. They make noise when you fire a shot through them. The action makes noise as it runs. And supersonic bullets make sonic cracks downrange as they fly through the air. These are real facts of like and not some fantasy of your imagination.
Let's say you are out at your local range firing an AR15 at a target 200 yards distant. Your rifle is equipped with a suppressor. As you fire the rifle the report is very similar to that of a rifle firing .22LR.
Does it matter that it isn't completely silent ? No
Does it matter that the report has a little sharper sound to it because the bullet is supersonic ? No.
The fact is that you have taken a VERY loud rifle and toned it down to something that you can comfortably shoot without hearing proection.
This is real life, not the crap you see in the movies. If someone was standing 10 feet away they would know you were firing a gun. But the Gestopo isn't going to take you away for interrogation.
If you are firing a 9mm or a .45 ACP handgun with a suppressor and you want to be able to shoot on your couple acre lot without the neighbors knowing about it, it is certainly something you can do. They won't have a clue unless they see you doing it.
I am all for getting the quietest suppressor you can and doing whatever it takes to get it as quiet as possible (loads, firing it wet.....) but let's keep it real.
The stuff I see on these foums is amazing.
Ninja