almost any barrel can be modified by a good gunsmith (threaded) but it would help us help you if you included a gun model number

For a rifle, say a bolt action - a gunsmith can thread the barrel. For an AR, replace the flash hider, for a pistol, you'll most likely need and OEM or aftermarket threaded barrel. Suppressors are a TON of fun, and I highly recommend going through the hassle of getting one!

Hi Mathew, If you add threads you can add anything. Good Luck

Yes, most any barrel can be threaded for the addition of a suppressor/silensor Matthew.