Advanced Armament Corp (AAC) makes add-on and replacement parts for their suppressors. These AAC suppressor accessories include pistons, mounts, adapters, and end caps. They let suppressors fit various threaded barrels and firearm types. AAC suppressor accessories work with AAC suppressors and threaded pistol or rifle barrels. They also fit a range of handguns and rifles. This makes caliber and platform changes fast and easy.