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Geissele Super Duty Lower Parts Kit Black 05-428B

SKU 05-428B-Geissele

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Rebuild your AR’s lower receiver with Geissele’s Enhanced Super Duty Lower Parts Kit (LPK). All of the components in the Super Duty LPK are manufactured in house at Geissele’s facility in North Wales Pennsylvania, and feature proprietary designs made from high strength stainless steel. The Super Duty LPK parts are highly resistant to rust and corrosion, ensuring a long service life under extreme conditions and heavy use. Notable components of the LPK include Geissele’s Maritime Bolt Catch, which offers aggressive texturing and extended paddles, and the Ambidextrous Posi-Lock safety features a positive tactile feedback when shifting from the safe or fire positions. Another prominent item in the Super Duty LPK is the Geissele Trigger Guard, which features a wider opening for easier operation while wearing gloves.

The Geissele’s Enhanced Super Duty Lower Parts Kit Includes:

  • Takedown Pin & Pivot Pin Detents (2)
  • Takedown Pin & Pivot Pin Springs (2)
  • Takedown Pivot Pin
  • Bolt Catch Plunger
  • Bolt Catch Spring
  • Bolt Catch Coiled Pin
  • Maritime Bolt Catch
  • Safety Detent
  • Buffer Retainer
  • Buffer Retainer Spring
  • Safety Detent Spring
  • Takedown Pin
  • Magazine Release Button
  • Magazine Release Spring
  • Posi-Snap Ambidextrous Safety Selector Assembly
  • Magazine Catch
  • Coiled Trigger Guard Pin
  • Super Duty Trigger Guard
  • Hex Key


  • Product TypeRifle Parts
  • Item ConditionNew
  • UPC817953025291
  • MPN05-428B

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