The Advanced Armament Corp suppressor piston is a key part for AAC pistol suppressors like the Ti-RANT series. It lets the suppressor work reliably with the recoil-driven actions of semi-automatic pistols. In addition, it fits AAC suppressors, threaded pistol barrels, and compatible handguns in 9mm, .40 S&W, and .45 ACP. Shooters can swap it for different thread patterns as needed. Therefore, it delivers reliable, quiet operation across multiple pistol platforms.