Note that magazines with a capacity greater than 10 rounds cannot be shipped to California, and New Jersey. 20 round limit for Maryland
Promag Ruger 10-22 50 Rd Drum Magazine
These steel mags are US made and come with an unconditional guarantee. Ruger 10/22 Drum Magazine Sturdy 50-round magazine is made of rugged polymer and has metal feed lips, so it will withstand years of use. Fits most 10/22 models, .22LR and .17HM2, Made in the U.S.A.