Polymer MDT AICS External Box Magazines for MDT Chassis systems. Also works in many other M24 type chassis and bottom metals. - DETAILS - MDT Detachable AICS box magazines are designed to fit the MDT TAC21 ACC ESS LSS-XL XRSLSS and HNT26 Chassis systems as well as many other M24 type chassis and bottom metals. Manufactured from high quality Polymer and uses a tempered steel spring. - We put our magazines through vigorous testing. We have used high quality strength polymer with a high glass content to ensure durability and strength. Although not unbreakable we have driven over these magazines with cars and trucks which did not break them. - CAPACITY - .308/6.5 Creedmoor family of cartridges: 5 Round capacity - MAX COAL: 2.850 - 3.25 Tall - COMPATIBILITY - MDT AICS magazines are guaranteed to work in our HNT26 XRS TAC21 LSS LSS-XL HS3 ESS and ACC chassis systems. - They do not work with the following inlets; Winchester XPC and may require fitting in Winchester Model 70. Based on customer feedback the following systems work well with our magazines but fitting may be required in some cases. - XLR Chassis - KRG X-Ray - Some need adjustment - GRS riflestocks- (Configured for AICS magazines) - CDI Precision bottom metals- (Configured for AICS magazines) - Pacific tool and Gauge bottom metals- (Configured for AICS magazines)