Gemtech TRACKER, Rifle Suppressor, .30 Cal Hunting Suppressor, Weight 11.3oz, Length 8, Diameter 1.5, Black Finish 12116 The GEMTECH Tracker was designed for military snipers and has been adapted to suit the U.S. hunter market. The Tracker is only 11.3 ounces so it doesn't add too much weight to lightweight barrels. Being 300WM rated means the Tracker is ready to help you take your next big game.