1. 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... 5.0 (2 Reviews)
    $429.99
    Available
  2. 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... 4.4 (9 Reviews)
    $1,146.00
    Available
  3. 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...
    $1,092.00
    Available
  4. 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
  5. 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... 5.0 (1 Review)
    $1,399.99
    Available View More Options
  6. New Arrival Banner
    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... 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... 4.6 (14 Reviews)
    $419.99
    Available
  8. 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... Available
  9. 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... 3.6 (5 Reviews)
    $679.99
    Available
  10. 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... 5.0 (1 Review)
    $1,217.70
    Available
  11. New Arrival Banner
    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
  12. 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 ... 4.4 (5 Reviews)
    $836.55
    Available
  13. 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
    Mixed Availability View More Options
  14. 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?
  15. 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... Available
  16. 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... 3.9 (7 Reviews)
    $429.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  17. 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... 5.0 (1 Review)
    $449.99
    Unavailable - Limited Production
    What are product arrival notifications?
  18. 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?
  19. 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... Coming Soon
    What are product arrival notifications?
  20. 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... Coming Soon
    What are product arrival notifications?
  21. 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... Coming Soon
    What are product arrival notifications?
  22. 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... Coming Soon
    What are product arrival notifications?
  23. 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... 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"... Available
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