Lightweight aluminum and carbon-fiber extension adds 6 rounds to your Mossberg 590. Includes extra-long spring for custom fitting. 14.5" length maximizes capacity without excessive weight.
Fits: Mossberg 590
This extension tube represents a practical solution for shooters seeking increased magazine capacity without sacrificing the handling characteristics of their shotgun.
The extension attaches directly to your existing shotgun magazine tube, making installation straightforward for most shooters. For tubes extending beyond the barrel, extension clamps are recommended to ensure stability and prevent unwanted movement during firing.
Whether you're running a defensive shotgun, competing in 3-gun matches, or hunting, this extension provides meaningful capacity gains without the bulk and weight of traditional steel tubes. The combination of materials keeps your shotgun balanced and responsive while giving you the ammunition supply you need for extended shooting sessions.