AICS SHORT ACTION GEN 2 223/5.56MM POLYMER MAGAZINE MDT Detachable AICS box magazines are designed to fit the MDT TAC21, ACC, ESS, LSS-XL, XRS and LSS 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. FEATURES: CAPACITY .223REM family of cartridges: 10 Rounds MAX COAL: 2.550" COMPATIBILITY: MDT AICS mag Mfg: Mdt