Limbsaver has taken its recoil-dampening technology and produced a Barrel De-Resonator that reduces vibration through the barrel, creating better accuracy and reducing settling time for more accurate follow-up shots. This rubber cuff installs easily over the barrel in minutes. Black. FeaturesDampens vibration and shortens settling time of barrelAccuracy benefits are immediateEasy to install, simply slips over most bull barrelsFits barrels with 3/4-1 1/18-inch diameters