Inspired by the ODIN Works O2 Lite, the XMR3 is the latest mag release available from ODIN Works. Machined from billet 6061 aluminum and designed to work with KNS pins and the BAD lever. The XMR3 has the largest profile yet, making it easily accessible by all shapes and sizes of hands and fingers. Works with both AR15 and some AR10 lower receivers. For Aero M5 Lowers purchase the AR10 Add on button. Easy install that takes minutes.