The GEMTECH Tracker a can originally designed for military snipers is now available to the U.S. hunter market. The lightweight design of the Tracker adds a mere 11.3 ounces to the overall barrel weight. The Tracker is ready to help you take your next big-game straight to the trophy case.Minimum Barrel length: 24" or longer 300WM 16" or longer .308 WIN 16" or longer 6.5 Creedmoor 16" or longer .223 7.5" or longer 300 BLK Features:Caliber: .30Sound Tested: 139dB S&W M&P Sport .223 16" | 128dB Daniel DefenseA(R) DDM4V11 300BLK 16" | 136dB RemingtonA(R) 700 7mm Rem Mag 24" | 138dB SavageA(R) Model 10 .243 WIN 18" | 138dB Weatherby VanguardA(R) 300WM 24"Diameter: 1.6"Overall Length: 7.9"Weight: 11.3 oz.Mount Type: 5/8-24 (2A) ThreadsTube Material: AluminumFull Auto Rated: NoTube Finish: Hard Coat Anodized All ORDERS for this product must be made through your CSSI Sales Representative