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  1. AR-Stoner AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.6 (136 Reviews)
    Sale
    $329.99
    Save $70.00 (17%)
    Available
  2. AR-Stoner AR-15 A3 Upper Receiver Assembly 7.62x39mm 16" Barrel
    4.7 (6 Reviews)
    Sale
    $329.99
    Save $70.00 (17%)
    Available
  3. Bushmaster AR-15 A3 Upper Receiver Assembly 450 Bushmaster 16" Barrel
    5.0 (44 Reviews)
    $659.99
    Available
  4. Alexander Arms AR-15 AWS A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    5.0 (8 Reviews)
    $1,139.99
    Available
  5. Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid
    5.0 (9 Reviews)
    $719.87
    Out of Stock, Backorder OK
    What are product arrival notifications?
  6. Adams Arms AR-15 Pistol PDW Tactical Elite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5"
    4.2 (11 Reviews)
    $699.60
    Out of Stock, Backorder OK
    What are product arrival notifications?
  7. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    $1,130.50
    Available
  8. Alexander Arms AR-15 Precision A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    4.3 (3 Reviews)
    $979.99
    Available
  9. Alexander Arms AR-15 Entry A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    4.5 (50 Reviews)
    $758.99
    Available
  10. Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.4 (31 Reviews)
    $579.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  11. Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Le
    4.2 (28 Reviews)
    $719.87
    Out of Stock, Backorder OK
    What are product arrival notifications?
  12. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.5 (6 Reviews)
    $1,133.55
    Available
  13. Alexander Arms AR-15 Overwatch A3 Upper Receiver Assembly 6.5 Grendel 24" Barrel
    4.5 (39 Reviews)
    $849.99
    Available
  14. Yankee Hill AR-15 Specter XL Black Diamond Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.6 (20 Reviews)
    $840.00
    Available
  15. Adams Arms AR-15 Base A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Length
    4.4 (63 Reviews)
    $550.64
    Available
  16. 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?
  17. Del-Ton AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 11.5" Barrel
    4.6 (12 Reviews)
    $419.99
    Available
  18. Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 1 in 9" Twist 20" Government Contour Barrel
    4.2 (22 Reviews)
    $419.99
    Available
  19. Noveske AR-15 N4 Lo-Pro Gen III A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    $1,371.15
    Available
  20. Noveske AR-15 Light Recce Lo-Pro A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel NSR-13.5 Free
    $1,410.75
    Out of Stock, Backorder OK
    What are product arrival notifications?
  21. DoubleStar AR-15 A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel 1 in 8" Twist Barrel
    4.5 (2 Reviews)
    $509.99
    Available
  22. Olympic Arms AR-15 A3 Upper Receiver Assembly 7.62x39mm 16" Barrel
    4.4 (30 Reviews)
    Clearance2 at this price
    $501.61
    Save $74.38 (12%)
    Available
  23. Adams Arms AR-15 Pistol Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 11.5" Barr
    4.6 (9 Reviews)
    $699.46
    Out of Stock, Backorder OK
    What are product arrival notifications?
  24. Del-Ton AR-15 Dissipator A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.6 (37 Reviews)
    $429.99
    Available
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