The Hawkins Precision Mid-Length / Defiance XM DBM Bottom Metal is a billet aluminum, M5 detachable box magazine bottom metal designed for medium-length rifles like Defiance XM. It accepts AICS-pattern magazines, features a patented cantilever spring magazine release, and includes a barricade stop and drafted port for smooth, reliable feeding in hunting and precision applications. Hawkins Precision Defiance XM Mid-Length DBM Bottom Metal 310-0003 in Black