• Replacement Mag Spring for PSA Rock +7 Ext.

    • Replacement Mag Spring for PSA Rock +7 Ext.

    $10.00
    (2 reviews) Write a Review
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    Product Description

    This spring fits the Excess Arms +7 Mag extension for the PSA 5.7 Rock. The Magazine Spring is wound from high strength Music Wire to ensure unparalleled reliability without needlessly increasing loading force.

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    • 5
      PSA Rock mag spring

      Posted by Todd Y on Aug 16th 2026

      Great quality spring retention with correct length and twist gap.

    • 5
      Extended 5.7 mag spring

      Posted by Derek on Jul 28th 2025

      Fit and work great