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Showing 1 - 24 of 138 results
  1. DPMS AR-15 Oracle A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Chrome Moly Matte Barrel
    4.7 (103 Reviews)
    $511.99
    Available
  2. Alexander Arms AR-15 Overwatch A3 Upper Receiver Assembly 6.5 Grendel 24" Barrel
    4.4 (20 Reviews)
    $849.99
    Available
  3. Yankee Hill AR-15 Specter XL Black Diamond Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.6 (18 Reviews)
    $840.00
    Available
  4. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    5.0 (3 Reviews)
    $1,130.50
    Available
  5. Advanced Armament Co (AAC) AR-15 Pistol A3 Upper Receiver Assembly 300 AAC Blackout 9" Barrel
    4.7 (7 Reviews)
    $1,079.99
    Available
  6. Adams Arms AR-15 Pistol PDW Base A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5" Barrel
    4.5 (8 Reviews)
    $735.00
    Available
  7. Del-Ton AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 11.5" Barrel
    4.0 (5 Reviews)
    $432.99
    Available
  8. Alexander Arms AR-15 Precision A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    $979.99
    Available
  9. Olympic Arms AR-15 A3 Upper Receiver Assembly 7.62x39mm 16" Barrel
    4.6 (25 Reviews)
    $575.99
    Out of Stock, Backorder OK
  10. DPMS AR-15 AP4 A3 Conversion Upper Receiver Assembly 22 Long Rifle 16" Barrel
    4.7 (35 Reviews)
    $429.99
    Available
  11. Alexander Arms AR-15 AWS A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    5.0 (4 Reviews)
    $1,139.99
    Out of Stock, Backorder OK
  12. Advanced Armament Co (AAC) AR-15 A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    4.7 (12 Reviews)
    $1,079.99
    Available
  13. Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 1 in 9" Twist 20" Government Contour Barrel
    4.2 (13 Reviews)
    $379.99
    Sale Save $53.00 (12%)
    Available
  14. Del-Ton AR-15 Dissipator A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.7 (32 Reviews)
    $432.99
    Available
  15. Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel 1 in 9" Twist Mid Length Heavy Contour Barrel
    5.0 (22 Reviews)
    $432.99
    Out of Stock, Backorder OK
  16. DPMS AR-15 A3 Conversion Upper Receiver Assembly 22 Long Rifle 16" Barrel
    4.6 (17 Reviews)
    $419.99
    Available
  17. Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Length
    4.1 (25 Reviews)
    $719.87
    Out of Stock, Backorder OK
  18. Yankee Hill AR-15 Smooth Carbine Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    5.0 (7 Reviews)
    $783.00
    Available
  19. Adams Arms AR-15 C.O.R. Ultra Lite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16.5" Barrel No Sights
    2.9 (8 Reviews)
    $998.95
    Available
  20. DPMS AR-15 A3 Upper Receiver Assembly 223 Remington 1 in 9" Twist 16" Bull Barrel
    4.8 (32 Reviews)
    $594.99
    Available
  21. Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.3 (25 Reviews)
    $579.99
    Out of Stock, Backorder OK
  22. AR57 AR-15 Generation 2 A3 Upper Receiver Assembly 5.7x28mm FN 16" Barrel
    4.0 (4 Reviews)
    $768.99
    Available
  23. CMMG AR-15 M4 LE A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel Single Rail Gas Block
    4.3 (26 Reviews)
    $679.99
    Available
  24. Olympic Arms AR-15 A3 Upper Receiver Assembly 45 ACP 16" Barrel
    4.3 (19 Reviews)
    $719.99
    Out of Stock, Backorder OK
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