Showing 1 - 20 of 127 results
  1. Bushmaster AR-15 A3 Upper Receiver Assembly 450 Bushmaster 16" Barrel
    5.0 (13 Reviews)
  2. Bushmaster AR-15 A3 Upper Receiver Assembly 450 Bushmaster 20" Barrel
    4.9 (17 Reviews)
  3. DPMS AR-15 Oracle A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Chrome Moly Matte Barrel
    4.7 (105 Reviews)
    $511.99
    Available
  4. DPMS AR-15 A2 Upper Receiver Assembly 5.56x45mm NATO 20" Barrel A2 Handguard
    4.7 (13 Reviews)
    $483.99
    Available
  5. Alexander Arms AR-15 Overwatch A3 Upper Receiver Assembly 6.5 Grendel 24" Barrel
    4.5 (25 Reviews)
    $717.99
    Sale Save $132.00 (16%)
    Available
  6. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    5.0 (3 Reviews)
    $1,130.50
    Available
  7. Bushmaster AR-15 Patrolman M4 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.8 (16 Reviews)
    $429.99
    Sale Save $45.00 (9%)
    Available
  8. Adams Arms AR-15 Pistol PDW Base A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5" Barrel
    4.5 (8 Reviews)
    $735.00
    Available
  9. Olympic Arms AR-15 A3 Upper Receiver Assembly 7.62x39mm 16" Barrel
    4.7 (26 Reviews)
    $575.99
    Available
  10. Noveske AR-15 N4 Lo-Pro Gen III A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    5.0 (2 Reviews)
    $1,371.15
    Available
  11. Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.3 (25 Reviews)
    $579.99
    Available
  12. Yankee Hill AR-15 Specter XL Black Diamond Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.6 (18 Reviews)
    $840.00
    Available
  13. Advanced Armament Co (AAC) AR-15 Pistol A3 Upper Receiver Assembly 300 AAC Blackout 9" Barrel
    4.7 (7 Reviews)
  14. Alexander Arms AR-15 AWS A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    5.0 (4 Reviews)
  15. Del-Ton AR-15 Pistol A3 Upper Receiver Assembly 5.56x45mm NATO 11.5" Barrel
    4.3 (7 Reviews)
    $419.99
    Available
  16. Noveske AR-15 Rogue Hunter A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.3 (4 Reviews)
    $1,133.55
    Available
  17. Colt AR-15 Pistol Flat-Top Upper Receiver Assembly 5.56x45mm NATO 14.5" Barrel Flip Up Rear Sight
    $627.00
    Available
  18. Colt AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Flip Up Rear Sight
    $627.00
    Available
  19. Advanced Armament Co (AAC) AR-15 A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    4.6 (13 Reviews)
    $1,079.99
    Available
  20. Daniel Defense AR-15 DDM4v11 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    $939.55
    Available
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