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Lower Receiver Parts Checklist

In order to help you assemble all the parts necessary to complete your stripped lower receiver or 80% lower receiver, here is a complete AR-15 lower receiver parts checklist.

Lower Receiver

The AR-15 lower receiver can be built on either a stripped lower receiver or an 80% lower receiver.

  • Stripped Lower Receiver
  • 80% Lower Receiver

Lower Parts Kit

Lower parts kits are available with or without a buttstock assembly.

Individual LPK Parts

Lower parts kits (LPK) are available as complete packages or sold as stand alone parts.

  • Magazine Catch Button
  • Magazine Catch
  • Magazine Catch Spring
  • Trigger Pins
  • Disconnector
  • Spring Kit
  • Takedown Pins
  • Trigger
  • Hammer
  • Bolt Catch Plunger
  • Bolt Catch
  • Selector


The buttstock assembly can be purchased complete or as individual components.

  • Buttstock Assembly
  • Buttstock
  • Buffer Tube

80% Lower Jig

To efficiently complete your 80% lower consider an 80% lower jig or an 80% lower jig pack complete with multiple 80% lower receivers.

AR-15 Lower Receivers is proud to offer quality AR-15 components for your AR-15 build. Start your build today and have the confidence that your firearm is backed by our 100% satisfaction guarantee. If you have any further questions, please feel free to contact us.

Be safe, have fun and support the Second Amendment.


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DISCLAIMER: If you are new to the world of DIY AR-15 building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. We are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.

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