Magazine Extension 7 shot for the Winchester 1200 and 1300 Defender and Black Shadow. These magazine extensions are machined from super strong chrome moly steel tubing and are guaranteed for life. Each extension includes a new spring. Installation takes only minutes. 8 Shot magazine extension is not available for the Winchester. Tacstar
The 7 shot magazine extension will not extend past an 18" barrel.
The 8 shot magazine extension will not extend past a 20" barrel.
The 10 shot magazine extension will not extend past a 26" barrel.
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