I am going to say out of the box, nothing added , My 22 Mutant bone stock.... Is the quietist of them all ,
Next will be my 22 cricket with a LDC , Not as quite as the mutant but close.
third in line is my 25 Cricket with a LDC , Its quite but makes the wife more alert that I am shooting .
I also use some way cool noise damping foam on all my guns except the Mutant, just not got around to installing it on the barrel and tank on the mutant.
Its going to be quiet when I get it installed made a big difference with the crickets ,
Both my 22 and 25 crickets with LDCs and the foam sound dreading stuff. She did not say the 25 was louder , Just a deeper sound ,,,
Just different, She is 25 feet away in the tv room and I am shooting out the kitchen window on a Monopod. In doors.
When I had my 25 Marauder, (great shooting gun) she always got pissed at me for shooting it, way to loud.
and that's my story.
Mike