450 Bushmaster magazines for the AR15 are single-stack due to the diameter of the 450 Bushmaster case.  Since 450 Bushmaster is primarily a hunting round, the reduced single-stack capacity is not an issue.  The 450 Bushmaster magazines sold by will feed consistently, ensuring you can take the shot when it matters. will not ship magazines that violate regulations in the jurisdiction of the shipping address entered at checkout. You are responsible for knowing your local gun laws, but we are happy to help - call us at 888.706.0633.

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