Enhance your shooting experience with the tapco ar-15 magazine coupler, built to keep you ready for rapid reloads.Crafted from durable, 6061 machined aluminum, this coupler is designed to securely hold two magazines for your ar-15, letting you carry double the rounds for uninterrupted action.With its reliable two-bolt locking system, your magazines stay firmly in place, ensuring stability during movement or intense conditions.Compatible with most 5.56x45 magazines, this coupler is ideal for competitive shooters, tactical users, or anyone looking to streamline their gear for faster response times in the field.Caliber: 5.56x45mmMaterial: AluminumMagazine 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.