High-quality Ruger® factory magazines deliver optimal performance from your 10/22®, short action rifle, and long action rifle. Molded hard-polymer body, stainless steel feed lips, high-grade tempered spring steel spring help ensure reliable feeding and extra-long service life. BX-25® x 2 is a single magazine that holds a total of 50 rounds in two separate sections. Magazine can simply be flipped once one side is depleted, to shoot the remaining 25 rounds.
Big Book Catalog, Issue:73, Page:183
Sinclair, Issue:5B, Page:246