JE Machine Tech

JE5 AR 15 Lower Build Kit

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MSRP: $129.99
Now: $89.95
Was: $99.95
— You save $40.04



JE5 AR 15 Lower Build Kit

The JE5 AR 15 Lower Build Kit from Black Rifle Depot is the ultimate solution for those seeking a lightweight and high-quality lower build. The JE5 Mil-Spec AR 15 Stock is manufactured in the United States from high-grade polymer, making it a durable and long-lasting upgrade to your AR 15 build. The skeletonized design reduces weight, while the removable rubber butt pad and ambidextrous QD swivel mount offer comfort and versatility. This kit includes the JE5 AR 15 Stock Kit with AR 15 buffer tube assembly and a complete 31-piece AR 15 Lower Parts Kit, providing everything you need to finish your lower build. With a mil-spec design and American-made quality, the JE5 AR 15 Lower Build Kit is the perfect choice for your next build.


  • Includes JE5 Mil spec Stock (American Made)
  • Includes Complete Mil Spec Lower Parts Kit (American Made)
  • Includes Mil Spec Buffer Tube Kit (American Made)Lifetime Warranty 
    • 6-position 6061-T6 Aluminum Receiver Extension
    • 3 oz Buffer
    • Castle Nut & End Plate
    • Carbine Spring


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Warranty Information

This kit comes with our LIFETIME WARRANTY* in the rare case you need one. Each part is personally inspected for quality and hand packaged to ensure your satisfaction. *Note: Warranty only valid when used with mil-spec lower, warranty does not cover use with 80% lower.
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34 Reviews

  • 5
    JE5 AR 15 Lower Build Kit

    Posted by Jason Bryant on Nov 16th 2022

    Great product for the price. I really like the butt stock.

  • 4

    Posted by Jovan Daggs on Jan 14th 2022

    Simple but try boot kitha r 2 lower arts kit pulled old one out and used this one buffer tube and brace a little wobbly

  • 5

    Posted by Robert on Jan 10th 2022

    Everything fit and functioned as expected. Good quality parts!

  • 5
    Lower build

    Posted by AR BUD on Aug 28th 2021

    My 5th build ,finished today. All parts fit perfectly. Would highly recommend this kit

  • 5
    JE5 AR 15 Lower Build...

    Posted by Tim on Jun 16th 2021

    Matched up good with a Hybrid 80 lower topped with a Bear Creek Arms 7.62x39 for a very nice AR-47

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