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  1. AR-Stoner AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.7 (28 Reviews)
    Sale
    $299.99
    Save $80.00 (21%)
    Available
  2. AR-Stoner Side Charging Upper Receiver Assembled AR-15 223 Remington Matte
    4.5 (2 Reviews)
    $239.99
    Available
  3. Adams Arms AR-15 Pistol PDW Tactical Elite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7...
    4.1 (10 Reviews)
    $699.60
    Available
  4. Wheeler Engineering Delta Series Upper Receiver Vise Block Clamp AR-15
    4.7 (111 Reviews)
    $23.99
    Available
  5. DPMS AR-15 AP4 A3 Conversion Upper Receiver Assembly 22 Long Rifle 16" Barrel
    4.8 (43 Reviews)
    $399.99
    List Price: $424.99 Save $25.00 (5%)
    Available
  6. Alexander Arms AR-15 AWS A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    5.0 (8 Reviews)
    $1,139.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  7. Alexander Arms AR-15 Overwatch A3 Upper Receiver Assembly 6.5 Grendel 24" Barrel
    4.6 (32 Reviews)
    $849.99
    Available
  8. Vltor MUR Modular Upper Receiver with Combination Forward Assist / Shell Deflector Assembled AR-1...
    4.5 (2 Reviews)
    $189.95
    Mixed Availability View More Options
  9. Daniel Defense AR-15 DDM4v11 Pro A3 Upper Receiver Assembly 5.56x45mm NATO 18" Barrel
    5.0 (1 Review)
    $1,215.00
    Available
  10. Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid...
    4.2 (26 Reviews)
    $719.87
    Out of Stock, Backorder OK
    What are product arrival notifications?
  11. Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.4 (29 Reviews)
    $579.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  12. Daniel Defense AR-15 Pistol MK18 A3 Upper Receiver Assembly 5.56x45mm NATO 10.3" Barrel
    4.4 (8 Reviews)
    $1,091.55
    Out of Stock, Backorder OK
    What are product arrival notifications?
  13. Del-Ton AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 11.5" Barrel
    4.5 (10 Reviews)
    $419.99
    Available
  14. Alexander Arms AR-15 Entry A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    4.5 (49 Reviews)
    $758.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  15. Alexander Arms AR-15 Precision A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    4.3 (3 Reviews)
    $979.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  16. JP Enterprises AR-15 JP15 Upper Receiver Assembly 223 Remington (Wylde) 16" Barrel
    5.0 (3 Reviews)
    $1,369.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  17. AR-Stoner Upper Receiver Assembled AR-15 A3 Matte
    2.0 (1 Review)
    $89.99
    Out of Stock, Backorder OK
    What are product arrival notifications?
  18. ProMag Armorer's Upper & Lower Receiver Action Block Set AR-15
    4.5 (93 Reviews)
    $37.49
    Available
  19. Adams Arms AR-15 Pistol Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 11.5" B...
    4.4 (7 Reviews)
    $699.46
    Out of Stock, Backorder OK
    What are product arrival notifications?
  20. Adams Arms AR-15 Evo XLP A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    $759.87
    Out of Stock, Backorder OK
    What are product arrival notifications?
  21. Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assembly Carbine 5.56x45mm NATO 16" ...
    $699.46
    Out of Stock, Backorder OK
    What are product arrival notifications?
  22. Adams Arms AR-15 Pistol PDW Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5...
    4.0 (11 Reviews)
    $699.60
    Out of Stock, Backorder OK
    What are product arrival notifications?
  23. Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel 1 in 7" Twist Mid Length Mediu...
    4.5 (13 Reviews)
    $449.99
    Available
  24. CMMG AR-15 Mk4 T Upper Receiver Assembly 300 AAC Blackout 16" Salt Bath Nitride Finished Chrome M...
    5.0 (1 Review)
    $689.99
    Available
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