1. HK Magazine HK USC 45 ACP 10-Round Polymer Black
    HK Magazine HK USC 45 ACP 10-Round Polymer Black 5.0 (2 Reviews)
    $62.99
    Available
  2. ProMag Magazine HK USC 45 ACP Polymer Black
    ProMag Magazine HK USC 45 ACP Polymer Black 2.9 (8 Reviews)
    $27.99 - $29.99
    Available View More Options
  3. HK Magazine Clamp USC Black
    HK Magazine Clamp USC Black 2.5 (2 Reviews)
    $26.99
    Available
  4. HK Handguard Rail USC, SL8
    HK Handguard Rail USC, SL8
    $59.99
    Special Order
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