5.56x45mm NATO Lower Receivers

AERO PRECISION M5 Complete Lower Receiver w/ MOE SL Grip & Stock

Complete Lower Receiver W/Moe Sl Grip & Sl Stock For Ar-15 - Comp Lower W/Moe Sl Grip & Sl Carbine Stock For Ar-15 Blk

AERO PRECISION M4E1 Multi Caliber Complete AR15 Lower Receiver w/ A2 Grip & M4 Stock - FDE

ATI Milsport 223/5.56 Upper/Lower Receiver Combo with Burnt Bronze Finish

KNIGHTS ARMAMENT SR-15 IWS 5.56 NATO Lower Receiver Assembly Kit | Black

Franklin Armory BFSIII PISTOL Lower | Binary Trigger | SBA3

FRANKLIN ARMORY BFSIII Equipped Salus BLR w/SBM4 Brace Black

FRANKLIN ARMORY BFSIII Equipped Salus BLR w/SBM4 Brace ODG

FRANKLIN ARMORY BFSIII Equipped 5.56 NATO AR15 Complete Libertas Lower Receiver - Black

Ar-15 Blem Super Duty Stripped Receiver Sets - Ar-15 Blemished Super Duty Receiver Set 5.56mm Od Green

Ar-15 Blem Super Duty Stripped Receiver Sets - Ar-15 Blemished Super Duty Receiver Set 5.56mm Black

Geissele Automatics Geissele Super Duty 5.56 NATO 10.3" 1:7" CHF Bbl Luna Black Pistol 08-186LBP

Radian Weapons AX556, Billet Upper/Lower Set, Semi-auto, 556 NATO/223 Remington, Ambidextrous, Cerakote Finish, Brown, Includes Radian Talon Ambidextrous Safety, Hammer Pin, 14 in MLOK Handguard R0413

Radian Weapons AX556 5.56 NATO Semi-Automatic Flat Dark Earth Cerakote

Radian Weapons AX556, Billet Upper/Lower Set, Semi-auto, 556 NATO/223 Remington, Ambidextrous, Cerakote Finish, Brown, Includes Radian Talon Ambidextrous Safety, Hammer Pin, 17 in MLOK Handguard R0397

Radian Weapons AX556, Billet Upper/Lower Set, Semi-auto, 556 NATO/223 Remington, Ambidextrous, Cerakote Finish, Brown, Includes Radian Talon Ambidextrous Safety, Hammer Pin, 15.5 in MLOK Handguard R0405

Radian Weapons AX556, Billet Upper/Lower Set, Semi-auto, 556 NATO/223 Remington, Ambidextrous, Cerakote Finish, Olive Drab Green, Includes Radian Talon Ambidextrous Safety, Hammer Pin, 17 in MLOK Handguard R0399

CMMG Mk4 Semi-automatic Lower Receiver 223 Rem 556NATO Magpul PRS Stock

Spikes Tactical Rare Breed Crusader Set Distressed Cerakote 5.56 NATO / .223 Rem M-LOK Handguard

SPIKES TACTICAL Spartan Stripped Lower 223/5.56 Black w/Red Helmet

Spike's Tactical Multi-Cal PHU Skull Stripped Lower Receiver, Black

Bravo Company Manufacturing MK2 AR-15 Lower Receiver - Complete Lower - No Stock

Ar-15 Complete Lower Receiver W/ A5 Buffer & Bcmgunfighter Stock - Complete Lower Receiver W/A5 Buffer & Gunfighter Stock Blk

Stag Arms Stripped 5.56 Lower RCVR(BLEM)