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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Omega AR-15 Lower Build Kit

Save 50%
MSRP: $119.95
Original price was: $77.85.Current price is: $54.95.
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Surplus AR-15 Mil-Spec Bare Bones Lower Build Kit

Save 100%
MSRP: $99.95
Original price was: $59.90.Current price is: $54.90.
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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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MFT BATTLELINK Mil-Spec Minimalist Lower Build Kit

Save 100%
MSRP: $123.99
Original price was: $121.88.Current price is: $64.95.
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Carbine Lower Build Kit Configurator

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Alpha AR-15 Lower Build Kit

Save 26%
MSRP: $119.99
From $88.16
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NBS AR-15 Mil-Spec Carbine SOPMOD Lower Build Kit

Save 53%
MSRP: $149.95
Original price was: $79.85.Current price is: $64.95.
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Rogers Super-Stoc Mil-Spec Lower Build Kit

Save 48%
MSRP: $154.95
From $74.95
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NBS CQB 4 Position Micro AR-15 Lower Build Kit

Save 40%
MSRP: $109.99
Original price was: $74.85.Current price is: $60.95.
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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