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

Sale!
Discount Mil-Spec Lower Build Kit

Discount Mil-Spec Lower Build Kit

Save 50%
MSRP: $109.95
Original price was: $64.90.Current price is: $49.95.
Sale!
Omega AR-15 Lower Build Kit

Omega AR-15 Lower Build Kit

Save 46%
MSRP: $119.95
Original price was: $82.85.Current price is: $64.95.
Sale!
Surplus AR-15 Mil-Spec Bare Bones Lower Build Kit

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

Save 54%
MSRP: $99.95
Original price was: $59.90.Current price is: $45.95.
Sale!
NBS Bare Bones Lower Build Kit

NBS Bare Bones Lower Build Kit

Save 11%
MSRP: $59.95
Original price was: $42.90.Current price is: $40.75.
Sale!
Retro AR-15 A2 Lower Build Kit

Retro AR-15 A2 Lower Build Kit

Save 31%
MSRP: $129.95
Original price was: $109.95.Current price is: $100.00.
RAVE-140 Lower Parts Kit Minus Grip

RAVE-140 Lower Parts Kit Minus Grip

Save 32%
MSRP: $179.99
Original price was: $167.94.Current price is: $117.90.
MFT BATTLELINK Mil-Spec Minimalist Lower Build Kit

MFT BATTLELINK Mil-Spec Minimalist Lower Build Kit

Save 100%
MSRP: $123.99
Original price was: $128.88.Current price is: $126.88.
Carbine Lower Build Kit Configurator

Carbine Lower Build Kit Configurator

Sale!
NBS AR-15 Mil-Spec Carbine SOPMOD Lower Build Kit

NBS AR-15 Mil-Spec Carbine SOPMOD Lower Build Kit

Save 53%
MSRP: $149.95
Original price was: $109.85.Current price is: $69.95.
Sale!
Alpha AR-15 Lower Build Kit

Alpha AR-15 Lower Build Kit

Save 26%
MSRP: $119.99
From $92.91
Sale!
Rogers Super-Stoc Mil-Spec Lower Build Kit

Rogers Super-Stoc Mil-Spec Lower Build Kit

Save 48%
MSRP: $154.95
From $79.95
Sale!
Dirty Bird AR-15 Carbine Hogue Lower Build Kit Minus FCG

Dirty Bird AR-15 Carbine Hogue Lower Build Kit Minus FCG

Save 19%
MSRP: $179.95
From $141.85
Sale!
NBS CQB 4 Position Micro AR-15 Lower Build Kit

NBS CQB 4 Position Micro AR-15 Lower Build Kit

Save 45%
MSRP: $109.99
Original price was: $79.85.Current price is: $59.95.
Sale!
Black Fallout Lower Build Kit

Black Fallout Lower Build Kit

Save 46%
MSRP: $239.95
From $119.20
Sale!
BCMGUNFIGHTER MOD 0 Lower Build Kit

BCMGUNFIGHTER MOD 0 Lower Build Kit

Save 20%
MSRP: $186.95
From $139.41
Sale!
Trinity Force Breach Blade Pistol Lower Build Kit

Trinity Force Breach Blade Pistol Lower Build Kit

Save 40%
MSRP: $109.95
Original price was: $94.85.Current price is: $65.95.
Sale!
Magpul SL-K Lower Build Kit Minus FCG

Magpul SL-K Lower Build Kit Minus FCG

Save 29%
MSRP: $139.95
From $109.13
Sale!
Magpul SL Lower Build Kit Minus FCG

Magpul SL Lower Build Kit Minus FCG

Save 29%
MSRP: $153.84
From $112.38
Dirty Bird A2 2-Stage Lower Build Kit

Dirty Bird A2 2-Stage Lower Build Kit

Save 100%
MSRP: $209.95
From $195.85
Dirty Bird Magpul MOE Fixed 2-Stage Lower Build Kit

Dirty Bird Magpul MOE Fixed 2-Stage Lower Build Kit

Save 100%
MSRP: $229.95
From $223.55
Magpul PRS Lower Build Kit Minus FCG

Magpul PRS Lower Build Kit Minus FCG

Save 9%
MSRP: $359.95
From $285.60
Sale!
KAK Shockwave Carbine 2M Blade Stabilizer Lower Build Kit

KAK Shockwave Carbine 2M Blade Stabilizer Lower Build Kit

Original price was: $104.85.Current price is: $99.60.
Magpul MOE SL Carbine Lower Build Kit

Magpul MOE SL Carbine Lower Build Kit

Save 34%
MSRP: $199.95
From $158.80
Sale!
Magpul STR Carbine Lower Build Kit

Magpul STR Carbine Lower Build Kit

Save 39%
MSRP: $229.95
Original price was: $175.00.Current price is: $130.45.