About any gun can have a suppressor added, they thread the end of the barrel and usually also include a cap to put on to protect the threads when the suppressor is off. I'm sure you know there is a $200.00 stamp you have to apply for to legally own one in the US. The paperwork is somewhat like when you fill out for the background check for a concealed carry.
A company near us makes suppressors for about anything you wish to put one on. A friend has one for his 10/22 that can also be switched over to a variety of his 22 pistols. Same thread on each barrel and with subsonic ammo all you hear is either the action cycle on the semi-auto or the bullet hitting the mud from his 22 contender.
SSK Industries
I think the suppressors are under the tactical tab.
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