Showing 1 - 20 of 59 results
  1. Bushmaster XM15 AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.9 (15 Reviews)
    $419.99
    Available
  2. Bushmaster AR-15 Patrolman M4 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.8 (31 Reviews)
    Sale
    $399.99
    Save $75.00 (16%)
    Available
  3. Adams Arms AR-15 Tactical Evo A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Length
    4.2 (26 Reviews)
    $719.87
    Available
  4. DPMS AR-15 Oracle A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Chrome Moly Matte Barrel
    4.8 (104 Reviews)
    Sale
    $459.99
    Save $52.00 (10%)
    Available
  5. Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.4 (27 Reviews)
    $579.99
    Available
  6. Colt AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Flip Up Rear Sight
    5.0 (3 Reviews)
    $627.00
    Available
  7. Yankee Hill AR-15 Specter XL Black Diamond Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.6 (18 Reviews)
    $840.00
    Available
  8. Colt AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Monolithic Rail Flip Up Sights
    $895.00
    Available
  9. Daniel Defense AR-15 DDM4v9 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    $1,025.00
    Available
  10. Colt AR-15 SOCOM A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    3.7 (3 Reviews)
    $727.00
    Available
  11. Bushmaster AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    5.0 (1 Review)
    Clearance
    $572.57
    Save $77.42 (12%)
    Available
  12. Daniel Defense AR-15 DDM4v11 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    $939.55
    Available
  13. Yankee Hill AR-15 Smooth Carbine Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    5.0 (9 Reviews)
    $783.00
    Available
  14. Adams Arms AR-15 Base A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Length
    4.4 (59 Reviews)
    $550.64
    Available
  15. Del-Ton AR-15 Dissipator A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.7 (32 Reviews)
    $429.99
    Available
  16. Adams Arms AR-15 Base A3 Gas Piston Upper Receiver Assembly Carbine 5.56x45mm NATO 16" Barrel
    4.8 (24 Reviews)
    $529.58
    Available
  17. Daniel Defense AR-15 DDM4v11 LW A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    $939.55
    Available
  18. Adams Arms AR-15 Tactical Elite A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Mid Length
    5.0 (7 Reviews)
  19. Del-Ton AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel 1 in 7" Twist M4 Contour Barrel
    4.9 (19 Reviews)
    $463.99
    Available
  20. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.4 (5 Reviews)
    $1,133.55
    Available
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