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Lower Build Kits

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

  • Discount Mil-Spec Lower Build Kit

    Discount Mil-Spec Lower Build Kit

    MSRP: $109.95 $74.95
  • Omega AR-15 Lower Build Kit

    Omega AR-15 Lower Build Kit

    MSRP: $119.95 $89.95
  • NBS Bare Bones Lower Build Kit

    NBS Bare Bones Lower Build Kit

    MSRP: $59.95 $49.95
  • B5 Systems AR-15 Enhanced SOPMOD Lower Build Kit

    B5 Systems AR-15 Enhanced SOPMOD Lower Build Kit

    MSRP: $249.95 $159.95
  • Surplus AR-15 Mil-Spec Bare Bones Lower Build Kit

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

    MSRP: $99.95 $59.95
  • Retro AR-15 A2 Lower Build Kit

    Retro AR-15 A2 Lower Build Kit

    MSRP: $129.95 $119.95
  • RAVE-140 Lower Parts Kit Minus Grip

    RAVE-140 Lower Parts Kit Minus Grip

    MSRP: $179.99 $169.95
  • Magpul MOE Lower Build Kit - Black

    Magpul MOE Lower Build Kit – Black

    MSRP: $169.95 $136.75
  • Alpha AR-15 Lower Build Kit

    Alpha AR-15 Lower Build Kit

    MSRP: $119.99 $99.95
  • B5 Systems AR-15 Bravo Lower Build Kit

    B5 Systems AR-15 Bravo Lower Build Kit

    MSRP: $159.95 $129.95
  • Sale! Rogers Super-Stoc Mil-Spec Lower Build Kit SALE ENDS: 00h 00m 00s

    Rogers Super-Stoc Mil-Spec Lower Build Kit

    Save 55% MSRP: $154.95 $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 44% MSRP: $123.99 $69.95
  • BCMGUNFIGHTER MOD 0 Lower Build Kit

    BCMGUNFIGHTER MOD 0 Lower Build Kit

    MSRP: $186.95 $179.95
  • Black Fallout Lower Build Kit

    Black Fallout Lower Build Kit

    MSRP: $239.95 $219.95
  • Dirty Bird Odin Works Zulu Lower Build Kit

    Dirty Bird Odin Works Zulu Lower Build Kit

    MSRP: $242.95 $217.95
  • 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

    MSRP: $199.95 $189.95
  • NBS CQB 4 Position Micro AR-15 Lower Build Kit

    NBS CQB 4 Position Micro AR-15 Lower Build Kit

    MSRP: $109.99 $99.95
  • Dirty Bird A2 2-Stage Lower Build Kit

    Dirty Bird A2 2-Stage Lower Build Kit

    MSRP: $185.95 $175.95
  • Trinity Force Breach Blade Pistol Lower Build Kit

    Trinity Force Breach Blade Pistol Lower Build Kit

    MSRP: $109.95 $99.95
  • Dirty Bird Magpul UBR 2-Stage Lower Build Kit

    Dirty Bird Magpul UBR 2-Stage Lower Build Kit

    MSRP: $361.95 $331.95
  • Sale! Placeholder SALE ENDS: 00h 00m 00s

    Black Fallout Lower Build Kit

    Save 25% MSRP: $239.95 $179.24