1. HK Magazine HK USC 45 ACP 10-Round Polymer Black
    HK Magazine HK USC 45 ACP 10-Round Polymer Black
    $62.99
    Available
  2. ProMag Magazine HK USC 45 ACP Polymer Black
    ProMag Magazine HK USC 45 ACP Polymer Black 2.7 (6 Reviews)
    $27.99 - $29.99
    Mixed Availability View More Options
  3. HK Magazine Clamp USC Black
    HK Magazine Clamp USC Black
    $26.99
    Available
  4. HK Handguard Rail USC, SL8
    HK Handguard Rail USC, SL8
    $59.99
    Special Order
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