1. Daniel Defense AR-15 Pistol MK18 A3 Upper Receiver Assembly 5.56x45mm NATO 10.3" Barrel Mil-Spec+
    Daniel Defense AR-15 Pistol MK18 A3 Upper Receiver Assembly 5.56x45...
    Available
  2. Daniel Defense AR-15 Pistol MK18 A3 Upper Receiver Assembly 5.56x45mm NATO 10.3" Barrel Black
    Daniel Defense AR-15 Pistol MK18 A3 Upper Receiver Assembly 5.56x45...
    Available
  3. Adams Arms AR-15 P2 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5'' Barrel
    Adams Arms AR-15 P2 Gas Piston Upper Receiver Assembly 5.56x45mm NA...
    Available
  4. War Sport AR-15 LVOA-C Upper Receiver Assembly 223 Wylde 14.7" Barrel LVOA-C Rail Handguard
    War Sport AR-15 LVOA-C Upper Receiver Assembly 223 Wylde 14.7" Barr...
    $1,399.99
    Mixed Availability View More Options
  5. Noveske AR-15 Pistol Light Shorty Lo-Pro A3 Upper Receiver Assembly 5.56x45mm NATO 10.5" Barrel
    Noveske AR-15 Pistol Light Shorty Lo-Pro A3 Upper Receiver Assembly...
    $1,217.70
    • {{fee.amount}} {{fee.description}}
    Available
  6. Adams Arms AR-15 P2 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 11.5'' Barrel
    Adams Arms AR-15 P2 Gas Piston Upper Receiver Assembly 5.56x45mm NA...
    Add to Cart for Price
    • {{fee.amount}} {{fee.description}}
    Regular Price: $899.99
    Available
  7. Del-Ton AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 11.5" Barrel
    Del-Ton AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 11.5...
    $419.99
    • {{fee.amount}} {{fee.description}}
    Available
  8. Colt AR-15 Pistol Upper Receiver Assembly 5.56x45mm NATO 14.5" Barrel Flip Up Rear Sight
    Colt AR-15 Pistol Upper Receiver Assembly 5.56x45mm NATO 14.5" Barr...
    $679.99
    • {{fee.amount}} {{fee.description}}
    Available
  9. New Arrival Banner
    Adams Arms AR-15 P3 Adjustable Gas Piston Upper Receiver Assembly 5.56x45mm NATO 14.5'' Barrel
    Adams Arms AR-15 P3 Adjustable Gas Piston Upper Receiver Assembly 5...
    Available
  10. New Arrival Banner
    Adams Arms AR-15 P2 Adjustable Gas Piston Upper Receiver Assembly 5.56x45mm NATO 11.5'' Barrel
    Adams Arms AR-15 P2 Adjustable Gas Piston Upper Receiver Assembly 5...
    Available
  11. Noveske AR-15 Pistol Light Shorty Basic A3 Upper Receiver Assembly 5.56x45mm NATO 10.5" Barrel
    Noveske AR-15 Pistol Light Shorty Basic A3 Upper Receiver Assembly ...
    $836.55
    • {{fee.amount}} {{fee.description}}
    Available
  12. War Sport AR-15 LVOA-S Upper Receiver Assembly 223 Wylde 11.75" Barrel LVOA-S Rail Handguard
    War Sport AR-15 LVOA-S Upper Receiver Assembly 223 Wylde 11.75" Bar...
    $1,399.99
    Out of Stock View More Options
  13. New Arrival Banner
    Adams Arms AR-15 P3 Adjustable Gas Piston Upper Receiver Assembly 5.56x45mm NATO 14.5'' Barrel wi...
    Adams Arms AR-15 P3 Adjustable Gas Piston Upper Receiver Assembly 5...
    Available
  14. New Arrival Banner
    Adams Arms AR-15 P2 Adjustable Gas Piston Upper Receiver Assembly 5.56x45mm NATO 14.5'' Barrel wi...
    Adams Arms AR-15 P2 Adjustable Gas Piston Upper Receiver Assembly 5...
    Available
  15. New Arrival Banner
    Adams Arms AR-15 P2 Adjustable Gas Piston Upper Receiver Assembly 5.56x45mm NATO 14.5'' Barrel
    Adams Arms AR-15 P2 Adjustable Gas Piston Upper Receiver Assembly 5...
    Available
  16. Radian AR-15 Pistol Model 1 Upper Receiver Assembly 223 Wylde 10.5" Barrel with M-Lok Handguard B...
    Radian AR-15 Pistol Model 1 Upper Receiver Assembly 223 Wylde 10.5"...
    Out of Stock, Backorder OK
    What are product arrival notifications?
  17. Adams Arms AR-15 P3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 14.5'' Barrel with Pinned F...
    Adams Arms AR-15 P3 Gas Piston Upper Receiver Assembly 5.56x45mm NA...
    Available
  18. Adams Arms AR-15 P2 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 14.5'' Barrel
    Adams Arms AR-15 P2 Gas Piston Upper Receiver Assembly 5.56x45mm NA...
    Add to Cart for Price
    • {{fee.amount}} {{fee.description}}
    Regular Price: $899.99
    Available
  19. Del-Ton AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 14.5" Barrel
    Del-Ton AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 14.5...
    $429.99
    • {{fee.amount}} {{fee.description}}
    Out of Stock, Backorder OK
    What are product arrival notifications?
  20. Adams Arms AR-15 P3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 14.5'' Barrel
    Adams Arms AR-15 P3 Gas Piston Upper Receiver Assembly 5.56x45mm NA...
    Add to Cart for Price
    • {{fee.amount}} {{fee.description}}
    Regular Price: $1,169.99
    Available
  21. AR-Stoner AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 11.5" Barrel with 10" M-Lok Hand...
    AR-Stoner AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 11...
    $429.99
    • {{fee.amount}} {{fee.description}}
    Out of Stock, No Backorder
    What are product arrival notifications?
  22. Bushmaster AR-15 Pistol A2 Upper Receiver Assembly 5.56x45mm NATO 11.5" Barrel
    Bushmaster AR-15 Pistol A2 Upper Receiver Assembly 5.56x45mm NATO 1...
    $449.99
    • {{fee.amount}} {{fee.description}}
    Unavailable - Limited Production
    What are product arrival notifications?
  23. Adams Arms AR-15 P2 Adjustable Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5'' Barrel
    Adams Arms AR-15 P2 Adjustable Gas Piston Upper Receiver Assembly 5...
    Coming Soon
    What are product arrival notifications?
  24. Radian AR-15 Pistol Model 1 Upper Receiver Assembly 223 Wylde 14.5" Barrel with M-Lok Handguard B...
    Radian AR-15 Pistol Model 1 Upper Receiver Assembly 223 Wylde 14.5"...
    Out of Stock, No Backorder
    What are product arrival notifications?
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