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    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
    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 (8 Reviews)
    $1,092.00
    Available
  3. 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
  4. Adams Arms AR-15 Pistol Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 11.5" B...
    Adams Arms AR-15 Pistol Tactical Evo A3 Gas Piston Upper Receiver A... 4.6 (11 Reviews)
    $699.46
    Available
  5. 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... 3.7 (12 Reviews)
    $679.99
    Available
  6. 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
    Mixed Availability View More Options
  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 (13 Reviews)
    $419.99
    Available
  8. 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
  9. 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
  10. 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
    Available
  11. Adams Arms AR-15 Pistol PDW Tactical Elite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7...
    Adams Arms AR-15 Pistol PDW Tactical Elite A3 Gas Piston Upper Rece... 4.3 (12 Reviews)
    $699.60
    Out of Stock, No Backorder
    What are product arrival notifications?
  12. Adams Arms AR-15 Pistol PDW Base A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5" Barrel
    Adams Arms AR-15 Pistol PDW Base A3 Gas Piston Upper Receiver Assem... 4.3 (12 Reviews)
    $735.00
    Out of Stock, No Backorder
    What are product arrival notifications?
  13. Adams Arms AR-15 Pistol PDW Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5...
    Adams Arms AR-15 Pistol PDW Tactical Evo A3 Gas Piston Upper Receiv... 4.1 (12 Reviews)
    $699.60
    Out of Stock, No Backorder
    What are product arrival notifications?
  14. 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?
  15. Adams Arms AR-15 Pistol Evo Ultra Lite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 14.5"...
    Adams Arms AR-15 Pistol Evo Ultra Lite A3 Gas Piston Upper Receiver... 4.3 (8 Reviews)
    $786.77
    Out of Stock, No Backorder
    What are product arrival notifications?
  16. Adams Arms AR-15 Pistol Evo XLP A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 14.5" Barrel
    Adams Arms AR-15 Pistol Evo XLP A3 Gas Piston Upper Receiver Assemb... 4.5 (2 Reviews)
    $759.87
    Out of Stock, No Backorder
    What are product arrival notifications?
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