1. AR-Stoner AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    AR-Stoner AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel 4.6 (294 Reviews)
    $399.99
    Available
  2. AR-Stoner AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel with 15" M-Lok Handguard
    AR-Stoner AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barre...
    $429.99
    Available
  3. AR-Stoner Carbine Kit with Complete Upper Assembly AR-15 5.56x45mm NATO 1 in 9" Twist 16" Barrel ...
    AR-Stoner Carbine Kit with Complete Upper Assembly AR-15 5.56x45mm ... 4.9 (7 Reviews)
    $509.99
    Available
  4. AR-Stoner AR-15 Side Charging Upper Receiver Assembly 5.56 16" Barrel with 15" M-Lok Handguard
    AR-Stoner AR-15 Side Charging Upper Receiver Assembly 5.56 16" Barr... 4.3 (11 Reviews)
    $499.99
    Available
  5. Daniel Defense AR-15 DDM4v11 LW A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    Daniel Defense AR-15 DDM4v11 LW A3 Upper Receiver Assembly 5.56x45m...
    $940.00
    Available
  6. Daniel Defense AR-15 DDM4v11 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    Daniel Defense AR-15 DDM4v11 A3 Upper Receiver Assembly 5.56x45mm N...
    $940.00
    Available
  7. Colt AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Flip Up Rear Sight
    Colt AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Fli... 4.8 (12 Reviews)
    $679.99
    Available
  8. Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel M...
    Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assemb... 4.7 (13 Reviews)
    $719.87
    Out of Stock, Backorder OK
    What are product arrival notifications?
  9. Yankee Hill AR-15 Specter XL Black Diamond Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    Yankee Hill AR-15 Specter XL Black Diamond Upper Receiver Assembly ... 4.3 (22 Reviews)
    Clearance7 at this price
    Add to Cart for Price
    Regular Price: $866.20
    Available
  10. Adams Arms AR-15 Evo XLP A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    Adams Arms AR-15 Evo XLP A3 Gas Piston Upper Receiver Assembly 5.56...
    $759.87
    Available
  11. Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.5... 4.4 (32 Reviews)
    $579.99
    Available
  12. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 5.56x45mm NAT... 4.5 (6 Reviews)
    $1,133.55
    Available
  13. Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid...
    Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly... 4.2 (29 Reviews)
    $719.87
    Available
  14. Daniel Defense AR-15 DDM4v5 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    Daniel Defense AR-15 DDM4v5 A3 Upper Receiver Assembly 5.56x45mm NA... 5.0 (4 Reviews)
    $1,025.00
    Available
  15. Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assembly Carbine 5.56x45mm NATO 16" ...
    Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assemb... 5.0 (1 Review)
    $699.46
    Available
  16. Noveske AR-15 Light Recce Lo-Pro A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel NSR-13.5 Fr...
    Noveske AR-15 Light Recce Lo-Pro A3 Upper Receiver Assembly 5.56x45...
    $1,410.75
    Available
  17. DPMS AR-15 Oracle A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Chrome Moly Matte Barrel
    DPMS AR-15 Oracle A3 Upper Receiver Assembly 5.56x45mm NATO 16" Bar... 4.7 (129 Reviews) Available
  18. HK AR-15 MR556 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16.5" Barrel
    HK AR-15 MR556 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16... 5.0 (5 Reviews)
    $1,799.99
    Available
  19. Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly Carbine 5.56x45mm NATO 16" Ba...
    Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly...
    $699.46
    Available
  20. Adams Arms AR-15 Evo Ultra Lite A3 Gas Piston Upper Receiver Assembly Carbine 5.56x45mm NATO 16" ...
    Adams Arms AR-15 Evo Ultra Lite A3 Gas Piston Upper Receiver Assemb... 5.0 (3 Reviews)
    $799.70
    Available
  21. Adams Arms AR-15 Base A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Length
    Adams Arms AR-15 Base A3 Gas Piston Upper Receiver Assembly 5.56x45... 4.4 (64 Reviews)
    $550.64
    Available
  22. Adams Arms AR-15 Base A3 Gas Piston Upper Receiver Assembly Carbine 5.56x45mm NATO 16" Barrel
    Adams Arms AR-15 Base A3 Gas Piston Upper Receiver Assembly Carbine... 4.8 (28 Reviews)
    $529.58
    Available
  23. Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel 1 in 9" Twist Mid Length Heavy...
    Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel ... 5.0 (25 Reviews)
    $419.99
    Available
  24. JP Enterprises AR-15 JP15 Upper Receiver Assembly 223 Remington (Wylde) 16" Barrel
    JP Enterprises AR-15 JP15 Upper Receiver Assembly 223 Remington (Wy... 5.0 (3 Reviews)
    $1,369.99
    Available
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