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  1. AR-Stoner AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    AR-Stoner AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    $399.99
    Available
  2. AR-Stoner Upper Receiver Assembled AR-15 A3 Matte
    AR-Stoner Upper Receiver Assembled AR-15 A3 Matte
    $89.99
    Available
  3. AR-Stoner AR-15 A3 Upper Receiver Assembly 7.62x39mm 16" Barrel
    AR-Stoner AR-15 A3 Upper Receiver Assembly 7.62x39mm 16" Barrel
    $399.99
    Available
  4. AR-Stoner Side Charging Upper Receiver Assembled AR-15 223 Remington Matte
    AR-Stoner Side Charging Upper Receiver Assembled AR-15 223 Remingto...
    $239.99
    Available
  5. AR-Stoner Upper Receiver Stripped AR-15 A3 Matte
    AR-Stoner Upper Receiver Stripped AR-15 A3 Matte
    $64.99
    Available
  6. Bushmaster AR-15 A3 Upper Receiver Assembly 450 Bushmaster 16" Barrel
    Bushmaster AR-15 A3 Upper Receiver Assembly 450 Bushmaster 16" Barrel
    $659.99
    Available
  7. 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...
    $699.60
    Available
  8. Alexander Arms AR-15 AWS A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    Alexander Arms AR-15 AWS A3 Upper Receiver Assembly 50 Beowulf 16.5...
    $1,139.99
    Available
  9. Colt AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Flip Up Rear Sight
    Colt AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Fli...
    $679.99
    Available
  10. 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
    Available
  11. Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel M...
    Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assemb...
    $719.87
    Out of Stock, Backorder OK
    What are product arrival notifications?
  12. DPMS AR-15 Oracle A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Chrome Moly Matte Barrel
    DPMS AR-15 Oracle A3 Upper Receiver Assembly 5.56x45mm NATO 16" Bar...
    $399.99
    Available
  13. Wheeler Engineering Delta Series Upper Receiver Vise Block Clamp AR-15
    Wheeler Engineering Delta Series Upper Receiver Vise Block Clamp AR-15
    $23.99
    Available
  14. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 5.56x45mm NAT...
    $1,133.55
    Available
  15. 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...
    $735.00
    Available
  16. Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assembly Carbine 5.56x45mm NATO 16" ...
    Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assemb...
    $699.46
    Available
  17. Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.5...
    $579.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  18. Alexander Arms AR-15 Overwatch A3 Upper Receiver Assembly 6.5 Grendel 24" Barrel
    Alexander Arms AR-15 Overwatch A3 Upper Receiver Assembly 6.5 Grend...
    Clearance21 at this price
    $763.59
    Save $86.40 (10%)
    Available
  19. Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 1 in 9" Twist 20" Government Contour Barrel
    Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 1 in 9" Twi...
    $419.99
    Available
  20. Vltor MUR Modular Upper Receiver with Combination Forward Assist / Shell Deflector Assembled AR-15
    Vltor MUR Modular Upper Receiver with Combination Forward Assist / ... 4.8 (6 Reviews)
    $179.96
    Out of Stock View More Options
  21. Alexander Arms AR-15 Precision A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    Alexander Arms AR-15 Precision A3 Upper Receiver Assembly 50 Beowul...
    $979.99
    Available
  22. Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid...
    Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly...
    $719.87
    Out of Stock, Backorder OK
    What are product arrival notifications?
  23. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 300 AAC Black...
    $1,130.50
    Available
  24. Advanced Armament Co (AAC) AR-15 Pistol A3 Upper Receiver Assembly 300 AAC Blackout 12.5" Barrel
    Advanced Armament Co (AAC) AR-15 Pistol A3 Upper Receiver Assembly ...
    $999.99
    Available
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