The lower receiver of an AR-15 is essentially the backbone of the weapon everything else is built off of, it is what makes an AR-15 a firearm.  An 80% lower receiver is exactly what it says, it is a lower receiver that is 80% complete.  By it being 80% complete it is considered a normal part and not a serialized firearm, so it is legal to purchase without the need of going through a background check or a local gun dealer.  

DTT Customs "Zalmoxes" AR-15 Featuring Aero Precision Upper Receiver 16" 5.56 NATO 4150 CMV QPQ Nitride 1-8T Barrel 15" M-Lok Handguard (Assembled or Unassembled) 

VISM M-Lok Hand Stop

Polymer80 G150 Phoenix V2 80% AR-15 Lower Receiver Kit - OD Green *ADD TO CART DISCOUNT*

AR-15 M4 3.0 lb Drop-In Ultra Match Trigger System with Anti-Walk Pins - Crimson Red

Delta Deals Breek Arms Warhammer Charging Handle + Storage Grip

Davidson Defense "Shoveler" AR-15 Cerakote Pistol Upper Receiver 7.5" 7.62x39 4150 CMV 1-10T Barrel 7" M-Lok Handguard (Assembled or Unassembled)

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