The 15-round BX-15 Magnum magazine incorporates technologies that have made the .22 LR BX-15 and BX-25 magazines famous and also features the same feed lip geometry that has proven reliable in the 9-round, JMX-1 rotary magazine. The BX-15 Magnum is compatible with the Ruger Precision Rimfire chambered in .17 HMR and .22 WMR, Ruger 77/17, Ruger 77/22 and Ruger American Rimfire rifles chambered in .17 HMR and .22 WMR. The stainless steel feed lips and "constant force" spring combine with a high-lubricity, polyacetal, anti-tilt follower and durable, glass-filled nylon magazine body to make the BX-15 magazine rugged, reliable and easy to clean.

WARNING: Discharging firearms in poorly ventilated areas, cleaning firearms, or handling ammunition may result in exposure to lead and other substances known to the State of California to cause birth defects, reproductive harm, and other serious physical injury. Have adequate ventilation at all times. Wash hands thoroughly after exposure.