The HOWA Ammo Boost magazine kit introduces an interchangeable mechanism compatible with Howa 1500 and Weatherby Vanguard rifles. This kit includes a 10-round magazine capable of accommodating either .223 Remington or .204 Ruger cartridges. Both components feature a black finish and are constructed from durable polymer material.

Compatible kits for all short and long action Howa 1500 rifles, including Weatherby Vanguards, S&W 1500, Mossberg 1500, and Interarms 1500 models
The product is designed for seamless installation, requiring minimal effort and preparation, allowing users to integrate it effortlessly into existing systems
Manufactured in the United States of America

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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.