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!
    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

    (16)
    Save 55%
    MSRP: $99.95
    $44.95
  • Sale!
    Omega AR-15 Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Omega AR-15 Lower Build Kit

    (124)
    Save 50%
    MSRP: $119.95
    $59.95
  • NBS Bare Bones Lower Build Kit

    NBS Bare Bones Lower Build Kit

    (62)
    Save 19%
    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

    (4)
    Save 57%
    MSRP: $149.95
    $64.95
  • RAVE-140 Lower Parts Kit Minus Grip

    RAVE-140 Lower Parts Kit Minus Grip

    (40)
    Save 25%
    MSRP: $179.99
    $117.90
  • Carbine Lower Build Kit Configurator

    Carbine Lower Build Kit Configurator

    (19)
  • Sale!
    Rogers Super-Stoc Mil-Spec Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Rogers Super-Stoc Mil-Spec Lower Build Kit

    (7)
    Save 52%
    MSRP: $154.95
    $74.95
  • Sale!
    NBS CQB 4 Position Micro AR-15 Lower Build Kit
    SALE ENDS: 00h 00m 00s

    NBS CQB 4 Position Micro AR-15 Lower Build Kit

    (1)
    Save 45%
    MSRP: $109.99
    $59.95
  • Sale!
    Trinity Force Breach Blade Pistol Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Trinity Force Breach Blade Pistol Lower Build Kit

    Save 36%
    MSRP: $109.95
    $69.95
  • Black Fallout Lower Build Kit

    Black Fallout Lower Build Kit

    (13)
    MSRP: $239.95
    $236.58
  • BCMGUNFIGHTER MOD 0 Lower Build Kit

    BCMGUNFIGHTER MOD 0 Lower Build Kit

    (7)
    Save 9%
    MSRP: $186.95
    $157.75
  • Sale!
    SB Tactical SBA5 Pistol Brace Lower Build Kit
    SALE ENDS: 00h 00m 00s

    SB Tactical SBA5 Pistol Brace Lower Build Kit

    (1)
    Save 37%
    $119.95
  • Sale!
    Magpul SL Lower Build Kit Minus FCG
    SALE ENDS: 00h 00m 00s

    Magpul SL Lower Build Kit Minus FCG

    (2)
    Save 29%
    MSRP: $153.84
    $109.95
  • Dirty Bird LE Style 2-Stage Lower Build Kit

    Dirty Bird LE Style 2-Stage Lower Build Kit

    Save 19%
    MSRP: $199.95
    $185.75
  • Sale!
    Magpul MOE SL Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul MOE SL Carbine Lower Build Kit

    Save 35%
    MSRP: $199.95
    $129.95
  • Sale!
    Magpul SL-K Lower Build Kit Minus FCG
    SALE ENDS: 00h 00m 00s

    Magpul SL-K Lower Build Kit Minus FCG

    (2)
    Save 29%
    MSRP: $139.95
    $99.95
  • Strike Industries AR-15 Enhanced Lower Build Kit for .223/5.56 - Black

    Strike Industries AR-15 Enhanced Lower Build Kit for .223/5.56 – Black

    (3)
    Save 6%
    MSRP: $199.95
    $185.75
  • Sale!
    Magpul CTR Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul CTR Carbine Lower Build Kit

    Save 30%
    MSRP: $199.95
    $139.95
  • Sale!
    Magpul PRS Lower Build Kit Minus FCG
    SALE ENDS: 00h 00m 00s

    Magpul PRS Lower Build Kit Minus FCG

    (1)
    Save 22%
    MSRP: $359.95
    $279.95
  • Sale!
    Dirty Bird Magpul MOE Fixed 2-Stage Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Dirty Bird Magpul MOE Fixed 2-Stage Lower Build Kit

    Save 26%
    MSRP: $229.95
    $169.95
  • Sale!
    Magpul MOE SL-M Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul MOE SL-M Carbine Lower Build Kit

    Save 33%
    MSRP: $179.95
    $119.95
  • Sale!
    SB Tactical SBA6 Pistol Brace Lower Build Kit
    SALE ENDS: 00h 00m 00s

    SB Tactical SBA6 Pistol Brace Lower Build Kit

    Save 37%
    $119.95
  • Sale!
    Magpul STR Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul STR Carbine Lower Build Kit

    Save 30%
    MSRP: $229.95
    $159.95
  • Sale!
    Magpul PRS Lite Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul PRS Lite Carbine Lower Build Kit

    Save 27%
    MSRP: $259.99
    $189.95
    • Ray ID: a457b1220d0e2994-SJC