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  1. AR-Stoner AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.6 (118 Reviews)
    Sale
    $329.99
    Save $70.00 (17%)
    Available
  2. Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel M...
    5.0 (9 Reviews)
    $719.87
    Available
  3. Alexander Arms AR-15 AWS A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    5.0 (8 Reviews)
    $1,139.99
    Available
  4. Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.4 (30 Reviews)
    $579.99
    Available
  5. AR-Stoner AR-15 A3 Upper Receiver Assembly 7.62x39mm 16" Barrel
    4.8 (4 Reviews)
    $399.99
    Available
  6. Bushmaster XM15 AR-15 A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    5.0 (2 Reviews)
    $649.99
    Available
  7. Alexander Arms AR-15 Entry A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    4.5 (50 Reviews)
    $758.99
    Available
  8. Adams Arms AR-15 Pistol PDW Tactical Elite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7...
    4.2 (11 Reviews)
    $699.60
    Out of Stock, Backorder OK
    What are product arrival notifications?
  9. Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assembly Carbine 5.56x45mm NATO 16" ...
    $699.46
    Available
  10. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    $1,130.50
    Available
  11. Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid...
    4.2 (28 Reviews)
    $719.87
    Out of Stock, Backorder OK
    What are product arrival notifications?
  12. Alexander Arms AR-15 Overwatch A3 Upper Receiver Assembly 6.5 Grendel 24" Barrel
    4.5 (39 Reviews)
    $849.99
    Available
  13. Yankee Hill AR-15 Specter XL Black Diamond Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.6 (19 Reviews)
    $840.00
    Available
  14. DPMS AR-15 AP4 A3 Conversion Upper Receiver Assembly 22 Long Rifle 16" Barrel
    4.8 (45 Reviews)
    $399.99
    List Price: $424.99 Save $25.00 (5%)
    Out of Stock, Backorder OK
    What are product arrival notifications?
  15. Noveske AR-15 N4 Lo-Pro Gen III A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    $1,371.15
    Available
  16. Olympic Arms AR-15 A3 Upper Receiver Assembly 7.62x39mm 16" Barrel
    4.6 (29 Reviews)
    $575.99
    Available
  17. JP Enterprises AR-15 JP15 Upper Receiver Assembly 223 Remington (Wylde) 16" Barrel
    5.0 (3 Reviews)
    $1,369.99
    Available
  18. DoubleStar AR-15 A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel 1 in 8" Twist Barrel
    4.5 (2 Reviews)
    $509.99
    Available
  19. Adams Arms AR-15 Pistol Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 11.5" B...
    4.6 (9 Reviews)
    $699.46
    Out of Stock, Backorder OK
    What are product arrival notifications?
  20. Noveske AR-15 Light Recce Lo-Pro A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel NSR-13.5 Fr...
    $1,410.75
    Out of Stock, Backorder OK
    What are product arrival notifications?
  21. Adams Arms AR-15 Pistol PDW Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5...
    4.0 (11 Reviews)
    $699.60
    Out of Stock, Backorder OK
    What are product arrival notifications?
  22. Noveske AR-15 Pistol Light Shorty Basic A3 Upper Receiver Assembly 5.56x45mm NATO 10.5" Barrel
    4.4 (5 Reviews)
    $836.55
    Available
  23. Adams Arms AR-15 Pistol PDW Base A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5" Barrel
    4.6 (10 Reviews)
    $735.00
    Out of Stock, Backorder OK
    What are product arrival notifications?
  24. Olympic Arms AR-15 A3 Upper Receiver Assembly 45 ACP 16" Barrel
    4.3 (22 Reviews)
    $719.99
    Available
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