Black Rifle Depot

AR 15 Lower Build Kit

(273 reviews) Write a Review
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Now: $89.95
Was: $99.95



AR 15 Lower Build Kit

Black Rifle Depot's Mil Spec AR 15 Lower Build Kit comes with everything you need to complete your AR 15 and variant lower receiver. The AR 15 Lower Build  Kit has a 6 position Mil Spec Stock with sling attachment and standard OEM AR 15 Lower Parts kit


  • MIL SPEC LOWER PARTS KIT (American Made)
  • Complete MIL SPEC Buffer Tube Kit W/Stock (American Made)
    • 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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273 Reviews

  • 5
    Nice kit worth thr mony will buy again

    Posted by John Stamos on Sep 13th 2022

    Will buy again

  • 5
    Very nice quality

    Posted by Billy Roark on Sep 7th 2022

    Nice product easy install, I've bought several these are hard to beat for the price

  • 3
    Nice kit have not been able to install yet waiting for my lower to arrive would have been nice to get assembly instructions since this is my first lower build will re rate later

    Posted by John on Jul 5th 2022

    Nice kit would been nice to get instructions by

  • 5
    Lower build kits

    Posted by Dustin Henderson on Apr 27th 2022

    These kits are pretty basic but I've never had a problem with them . I would recommend this kit to anyone

  • 5
    Great build kit

    Posted by Scott on Apr 22nd 2022

    I looked around for something in stock and not over priced for a lower parts kit for my 6.5 G. Came across this one and ordered. Plan on preferring 2 more for my other / builds

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