Remove your barrel and send it to us for threading, turn time is 7-10 business days (M-F). We also include a thread adapter and thread protector to cover the new 1/2x28 threads. We carefully thread the barrel tip to fit our thread adapter, giving you a new 1/2x28 threads to run a common 22lr or 9mm suppressor, fake suppressor or muzzle brake. This service does not include removal of your barrel. call for specifics.