Double your fun with 50 rounds of .22 LR. Compatible with any .22 LR Ruger® 77/22® rifle, 10/22 rifle, SR-22® rifle or 22 Charger™ pistol, this magazine combines two BX-25™ magazines into one. When the first 25 rounds are spent, simply flip the BX-50 around for an additional 25. This genuine Ruger magazine feeds as reliably as any other standard Ruger magazine. Stainless steel feed lips and springs for consistent feed reliability. Easily disassembles for cleaning. Made in USA.