There probably are a couple of posters here who are interested in seeing
a can mounted on a Ruger Mk. III.

http://tinyurl.com/qhq5wyj

It's a SilencerCo "Sparrow" silencer. The pistol is a bull barrel Ruger
Mk. III 512. I sent it off to Volquartsen to have the barrel threaded,
and for installation of the "full" Volquartsen modification kit.

For now, I'm using CCI "Standard" .22LR ammo, a round that is subsonic
and has enough "oomph" to cycle the pistol and my .22LR semi-auto rifle.
CCI's "Quiet" ammo doesn't have enough of a charge to cycle these firearms.

There are some name-brand "suppressor" rounds out there, supposedly, but
I've only found one source for CCI's rounds, and they are grossly
overpriced.

The loudest noise you hear when firing these rounds is the sound of the
firearms' bolt cycling.

When I applied for the necessary federal tax stamp, I was advised to use
a trust on the forms, because for several unknown reasons, the ATF
approves "trust" applications quicker than "individual" applications.
From what I have read on various firearms sites, that is indeed the
case, but no one seems to know why. When you get your stamp back, it is
"mounted" on a form. The stamp is greenish blue or blueish green, and
the ATF'er who processed it writes the serial number of the silencer on
the stamp, dates it, and initials it. You have to have the stamp or a
photocopy of it on you when you are out with the silencer.