Lower Build Kits

Filter

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

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

    MSRP: $99.95
    $69.90
  • Sale!
    Omega AR-15 Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Omega AR-15 Lower Build Kit

    Save 46%
    MSRP: $119.95
    $64.95
  • Retro AR-15 A2 Lower Build Kit

    Retro AR-15 A2 Lower Build Kit

    MSRP: $129.95
    $114.95
  • 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 52%
    MSRP: $154.95
    $74.95
  • Magpul MOE Lower Build Kit - Black

    Magpul MOE Lower Build Kit – Black

    MSRP: $169.95
    $165.79
  • NBS CQB 4 Position Micro AR-15 Lower Build Kit

    NBS CQB 4 Position Micro AR-15 Lower Build Kit

    Save 9%
    MSRP: $109.99
    $81.85
  • 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
  • BCMGUNFIGHTER MOD 0 Lower Build Kit

    BCMGUNFIGHTER MOD 0 Lower Build Kit

    Save 10%
    MSRP: $186.95
    $157.75
  • Dirty Bird SBA3 Lower Build Kit

    Dirty Bird SBA3 Lower Build Kit

    MSRP: $219.95
    $179.95
  • Sale!
    Magpul MOE SL Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul MOE SL Carbine Lower Build Kit

    Save 30%
    MSRP: $199.95
    $139.95
  • 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 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!
    Magpul STR Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul STR Carbine Lower Build Kit

    Save 35%
    MSRP: $229.95
    $149.95
  • Sale!
    Magpul PRS Lite Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul PRS Lite Carbine Lower Build Kit

    Save 31%
    MSRP: $259.99
    $179.95
  • Sale!
    Magpul MOE SL-S Carbine Lower Build Kit
    SALE ENDS: 00h 00m 00s

    Magpul MOE SL-S Carbine Lower Build Kit

    Save 30%
    MSRP: $229.95
    $159.95