AR15/AR9/AR40 - Lower Parts Kit - LPK - LRPK - Mil-Spec

$49.99 $42.00
(You save $7.99)
(21 reviews) Write a Review
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AR15/AR9/AR40 Lower Parts Kit - LPK - LRPK - Mil-Spec

Everything that you need to turn your stripped AR9/AR40/AR15 Lower into a fully functional unit.

Our LRPK is the perfect way to finish off your build.   All of our parts are Mil-Spec and built to the highest standards.  

Get a 10% discount on your Lower Parts Kit if you purchase one of our AAO Lower Recievers.

31 total pieces
- Selector Semi-Auto
- Selector Detent
- Selector Detent Spring
- Bolt Catch
- Bolt Catch Pin
- Bolt Catch Spring
- Bolt Catch Plunger
- Pistol Grip (A2 Style)
- Pistol Grip Screw
- Pistol Grip Washer
- Takedown Pin
- Takedown Pin Detent
- Takedown Pin Spring
- Pivot Pin
- Pivot Pin Detent
- Pivot Pin Spring
- Magazine Catch
- Magazine Catch Button
- Magazine Catch Spring
- Hammer Assembly - Semi-Auto
- Hammer Pin 
- Hammer Spring
- Trigger - Semi-Auto
- Trigger Pin
- Trigger Spring
- Disconnector - Semi-Auto
- Disconnector Spring
- Buffer Retainer
- Buffer Retainer Spring
- Trigger Guard
- Trigger Guard Pins

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21 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Chad Morgan on Mar 2nd 2020

    A complete kit with nothing else needed for my lower build. The trigger has a smooth feel with the pull I needed. Great job!!!!

  • 5
    lower parts kit

    Posted by Ted on Oct 4th 2019

    Also purchased a 80% lower finished with a 5D parts went in without a problem I finished so quickly I could not believe it.

  • 5
    AR Lower parts kit

    Posted by David on May 24th 2019


  • 5
    Lower parts kit

    Posted by David Williamson on Apr 15th 2019

    Great product and fast shipping

  • 5

    Posted by Lonnie B on Dec 2nd 2018

    Good quality kit. Functions as it should.

  • 5
    Mil-Spec Lower Parts Kit

    Posted by Tim M on Nov 5th 2018

    Awesome kit quality!

  • 5

    Posted by Jessie R on Oct 29th 2018

    This is a quality kit.

  • 5
    Lower Parts Kits

    Posted by Tom L on Oct 26th 2018

    Mil-Spec greatness! Seriously good kits.

  • 5

    Posted by Andrew K on Oct 23rd 2018

    Quality kit, Fast Shipping.