CMMG 4.6x30mm AR-15 10-Round Conversion Magazine

The CMMG® FourSix™ 4.6x30mm AR-15 10-Round Conversion Magazine safely feeds 4.6x30mm ammunition for reliable operation with your CMMG FourSix complete upper receiver (not included). Constructed of a durable, high-impact polymer, this magazine features a last round bolt hold-open functionality for clear indication of an empty magazine and faster reloads. Plus, this conversion magazine is backed by CMMG’s legendary lifetime warranty for added reliability.