Make no mistake - The Marauder is quiet - Very Quiet - Can it get better - You Bet !!!
I have my 22 cal set "wide open" and it can get a tad louder than I like while shooting in my neighborhood woods.
Check out my other post about "depingers" ?
I installed a homemade version that cost nothing and completely eliminated the ping
Took a total of about 15 minutes to get it installed !!
I have been messing with the tubes in the barrel shroud every since I got the gun to see if anything would work better.
Funny thing, you can take the tubes completely out and screw back on the end cap and there really isn't that much difference in the sound.
I've tried numerous materials inside the tubes to see if I could get this jewel as close to silent as possible.
Nothing seemed to make much of a difference - some materials made it even louder.
Today I ran across an article on Melamine foam.
It has the highest noise reduction level of almost anything out there.
I tried it inside the tubes and WHOOOOAAAAAAAAAAAAAAAAA !!!!!!!!!!
It's a Keeper !
Here's the good part - Your wife most likely has melamine under the sink with her cleaning materials.
Mr Clean Magic Erasers are made from Melamine Go figure !
It took about 10 minutes of cutting out strips of these and installing in the tubes to get my Marauder
about as close to silent as possible without the feds knocking on my door
Give these two mods a try and I think you'll be amazed !!!