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

Dirty Bird Magpul UBR 2-Stage Lower Build Kit

Dirty Bird Magpul UBR 2-Stage Lower Build Kit

Save 100%
MSRP: $361.95
From $336.70
Sale!
Magpul MOE SL-M Carbine Lower Build Kit

Magpul MOE SL-M Carbine Lower Build Kit

Save 39%
MSRP: $179.95
Original price was: $128.68.Current price is: $102.88.
Magpul PRS Lite Carbine Lower Build Kit

Magpul PRS Lite Carbine Lower Build Kit

Save 100%
MSRP: $259.99
Original price was: $199.29.Current price is: $188.29.