Seekins 0010330021 Carbon Fiber 3rd 6.5 PRC Magazine These magazines are constructed from hand-laid carbon fiber and maximize internal length to accommodate extended cartridge length to 6.5 PRC. These magazines offer excellent durability and weight savings. Note: For use with the HAVAK PH1, PH2, and Element DBM rifles chambered in 6.5 PRC ONLY. NOT compatible with AICS or the HAVAK BRAVO rifle. Seekins Precision Carbon Fiber 3rd 6.5 PRC Magazine 0010330021