Experience the pinnacle of magazine craftsmanship with the Auto Ordnance Thompson Drum Magazine from ProMag. Meticulously engineered using a blend of traditional and modern manufacturing techniques, this magazine combines the time-tested strength of heat-treated high carbon steel with the lightweight durability of DuPont Zytel-based polymer. ProMag's commitment to quality is unmatched. Each magazine undergoes rigorous traditional stamping and welding processes for the steel components, complemented by precise injection molding of Mil-Spec polymer compounds. This ensures robust construction and reliable performance in any shooting scenario. Backed by a lifetime guarantee against manufacturer's defects, the Auto Ordnance Thompson Drum Magazine from ProMag offers peace of mind and superior functionality. Elevate your shooting experience with ProMag - where innovation meets reliability.

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Shipping Restrictions

It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

It is the customer’s responsibility for understanding state laws regarding magazine capacities. Palmetto State Armory abides by all state regulations regarding the sale of high capacity magazines. We DO NOT ship high-capacity magazines with firearms to certain states. We WILL NOT replace high capacity magazines with state compliant magazines. We DO NOT offer refunds in place of the magazines. Please see our terms and conditions for a list or restricted states.

California 10+ Round Magazine Buyers: PSA values your freedom and constitutional rights above all else. However, PSA will not accept new orders nor will ship any order until the Ninth Circuit Federal Court of Appeals mandate becomes finalized. Once this mandate is finalized, we will start accepting new orders and ship 10+ round magazines to California Customers.