Maximize performance with the MDT AICS 3rd Flush Fit Polymer Magazine designed for .308 Win 6.5 Creedmoor and compatible calibers like 6mm Creedmoor .243 Win and more. Engineered with high-strength glass-infused polymer this magazine offers a durable lightweight and robust design. Tested under extreme conditions-including being run over by vehicles-these magazines ensure reliability when it matters most. Featuring a tempered steel spring for smooth feeding and seamless compatibility with MDT TAC21 ESS LSS-XL XRS and ACC chassis systems this magazine is the perfect upgrade for precision shooters. Not recommended for .300 WSM; use metal magazines for optimal function with that caliber.