Lower Build Kits

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Lower Build Kits

AR15Discounts has a great selection of Lower Build Kits. We have budget friendly kits starting under $80 and premium kits at competitive prices.

Explore our Curated Selection of Lower Build Kits from Top Tier Brands

Aero Precision , Magpul , Dirty Bird Industries , B5 Systems , NBS

  • Sale!
    Discount Mil-Spec Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Discount Mil-Spec Lower Build Kit

    Save 55%
    MSRP: $109.95
    $49.95
  • Sale!
    Surplus AR-15 Mil-Spec Bare Bones Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Surplus AR-15 Mil-Spec Bare Bones Lower Build Kit

    Save 50%
    MSRP: $99.95
    $49.95
  • Sale!
    Omega AR-15 Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Omega AR-15 Lower Build Kit

    Save 42%
    MSRP: $119.95
    $69.95
  • NBS Bare Bones Lower Build Kit

    NBS Bare Bones Lower Build Kit

    Save 7%
    MSRP: $59.95
    $53.90
  • Sale!
    NBS AR-15 Mil-Spec Carbine SOPMOD Lower Build Kit
    SALE ENDS: 00h 00m 00s

    NBS AR-15 Mil-Spec Carbine SOPMOD Lower Build Kit

    Save 53%
    MSRP: $149.95
    $69.95
  • Sale!
    MFT BATTLELINK Mil-Spec Minimalist Lower Build Kit
    SALE ENDS: 00h 00m 00s

    MFT BATTLELINK Mil-Spec Minimalist Lower Build Kit

    Save 38%
    MSRP: $129.99
    $79.95
  • Carbine Lower Build Kit Configurator

    Carbine Lower Build Kit Configurator
  • Sale!
    Rogers Super-Stoc Mil-Spec Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Rogers Super-Stoc Mil-Spec Lower Build Kit

    Save 48%
    MSRP: $154.95
    $79.95
  • Magpul MOE SL Carbine Lower Build Kit

    Magpul MOE SL Carbine Lower Build Kit

    Save 3%
    MSRP: $199.95
    $165.43
  • Magpul CTR Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul CTR Carbine Lower Build Kit

    Save 53%
    MSRP: $199.95
    $81.95
  • Magpul MOE SL-M Carbine Lower Build Kit

    Magpul MOE SL-M Carbine Lower Build Kit

    Save 17%
    MSRP: $179.95
    $126.25
  • Magpul PRS Lite Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul PRS Lite Carbine Lower Build Kit

    Save 20%
    MSRP: $259.99
    $163.95
  • Magpul MOE SL-S Carbine Lower Build Kit

    Magpul MOE SL-S Carbine Lower Build Kit

    Save 3%
    MSRP: $229.95
    $189.18