Cmc products' rpm or railed power mags are the strongest 1911 magazines ever made.The rpm design is the result of a relentless pursuit of excellence, maximizing reliability and durability under all conditions.The dual wall feed rails have revolutionized 1911 magazines.The feed rails built into the rpm are at lest twice as strong as any traditional 1911 magazine feed lips and provide the smoothest feeding surface.Caliber: 45 ACPCapacity: 10rdFinish: FluoropolymerModel: Railed Power MagMaterial: Stainless SteelType: DetachableModel Fit: 1911 GovernmentCapacity: 10Magazine Restrictions: The following states have magazine restrictions. Your order will not ship to those states if in violation of these laws and will be subject to cancellation and a 15% restocking fee. California - Limited to 10-round capacity. Connecticut - Limited to 10-round capacity. Colorado - Limited to a 15-round capacity. Delaware - Limited to 17-round capacity. Hawaii - Handguns limited to 10-round capacity Illinois (Cook Co, Aurora, Highland Park) - Pistol mags are limited to 10 rounds. Massachusetts - Limited to 10-round capacity. Maryland - Limited to 10-round capacity. New Jersey - Limited to 10-round capacity. New York - Limited to 10-round capacity. Road Island - Limited to 10-round capacity. Vermont - Handguns limited to 15-round capacity, Rifles limited to 10-round capacity. Washington DC - Limited to 10-round capacity. Washington - Limited to 10-round capacity.