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

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Discount Mil-Spec Lower Build Kit

Save 50%
MSRP: $109.95
Original price was: $69.90.Current price is: $54.95.
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Retro AR-15 A2 Lower Build Kit

Save 27%
MSRP: $129.95
Original price was: $104.95.Current price is: $99.70.
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Carbine Lower Build Kit Configurator

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Dirty Bird SBA3 Lower Build Kit

Save 18%
MSRP: $219.95
$179.95
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Dirty Bird SBA4 Lower Build Kit

Save 18%
MSRP: $219.95
$179.95