Introducing the ATI 410 GA Shotgun Upper Conversion Kit, an innovative solution to transform your existing AR-15 chambered in 5.56 or .223 caliber into a formidable 410 GA semi-automatic shotgun. This conversion opens up a world of possibilities, granting you access to a versatile and potent firearm suitable for hunting, safeguarding your home, range shooting, and more.

Included within this kit is an 18.5" matte hard chrome barrel, enveloped by a 13" keymod rail for convenient attachment of accessories such as lights, scopes, and other enhancements. The adjustable gas system empowers users to finely tune the recoil, optimizing the weapon's performance to their preferences. Moreover, a 5-round polymer magazine is provided, specifically designed to accept 2 1/2" shotgun shells. It's important to note that this upper conversion kit exclusively supports ATI's patented magazines. If desired, you can separately acquire 15-round magazines to bolster your round capacity.

AR 410 Gauge Omni Upper Kit 18" w/Buffer, Flip Up Sights, 5 Round Mag - ATI
13" MLOK Rail
Flip Up Sights
Includes a 5 Round Magazine
Includes a 3 oz Buffer

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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.

Local Law Compliance

Certain firearm parts and accessories, including AR-style upper receivers, are subject to complex and frequently changing federal, state, and local laws and regulations. While an upper receiver may be lawfully sold and shipped as a component, the legality of possessing, assembling, configuring, or using an upper receiver in certain states (e.g., California, Washington State) and localities depends on how it is assembled, combined with other components, and ultimately used. You are solely responsible for ensuring that any assembly, configuration, possession, or use complies with all federal, state, and local laws, including any so-called “assault weapon” bans and short-barreled rifle restrictions. We do not provide legal advice and are not responsible for unlawful configurations or uses.

American Tactical 410 Gauge 18" Barrel Upper Kit - 15MS410KIT