It is perfect for military, law enforcement, and home defense use
This extension fits 12 Gauge Mossberg 590 shotguns only
The 3-shot mag tube extension adds three additional rounds and extends 4.5 inches beyond the end of an 18.5 inches barrel
Unlike the competition, the magazine extension tube nut is CNC machined from wear-resistant solid steel bar stock instead of aluminum
Both magazine extension tubes are machined from 6061-T6 aluminum and type III hard anodized for a non-reflective matte black finish, adhering to Mil-Spec standards
The removable end cap of the magazine extension tubes facilitates cleaning and the use of a magazine plug
Package includes a new extended length magazine spring to ensure proper function

Features

Installing the GG&G Mossberg 590 magazine extensions is straightforward for those with basic shotgun maintenance skills. These extensions attach securely to the shotgun without requiring any modifications. The 3-shot magazine extensions can utilize the factory follower or you have the option to purchase them with the GG&G enhanced high visibility follower at a discounted rate, offering a cost-effective package for enhanced functionality.

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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.