This genuine Ruger® factory magazine with Ruger logo has been tested and has proven to feed as reliably as the standard BX-1 10-round Ruger® rotary magazine. BX-15® magazines will work with any factory original 10/22® Rifle, SR-22® Rifle, 22 Charger Pistol, .22 LR Ruger American Rimfire® Rifle and .22 LR Ruger 77/22® Rifle. Ruger cannot bill to or ship 15-round magazines to the following states and cities: California, Connecticut, Maryland, Massachusetts, New York, Washington DC. ILLINOIS: Cook County, Buffalo Grove, Dolton, Hazel Crest, Highland Park, Homewood, Melrose Park, and Oak Park. DO NOT ORDER THIS PRODUCT if you live in these locations.