Lower Receiver Parts

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  • Heckler & Koch MR556A1, Spring Magazine Catch, Steel

    Heckler & Koch

    Heckler & Koch MR556A1, Spring Magazine Catch, Steel

    Designed for steady, repeatable performance in varied environments, the Heckler & Koch SPRING MAGAZINE CATCH, HK417/MR556 emphasizes functional reliability and straightforward operation. Developed...

    $4.99
  • Heckler & Koch MR762A1, Retainer Buffer, Stainless Steel

    Heckler & Koch

    Heckler & Koch MR762A1, Retainer Buffer, Stainless Steel

    Designed for steady, repeatable performance in varied environments, the Heckler & Koch Retainer, Buffer, HK416/MR emphasizes functional reliability and straightforward operation. This accessory is...

    $15.99