Showing 1 - 20 of 139 results
  1. Bushmaster AR-15 A3 Upper Receiver Assembly 450 Bushmaster 16" Barrel
    4.9 (29 Reviews)
    $659.99
    Available
  2. Bushmaster AR-15 A3 Upper Receiver Assembly 450 Bushmaster 20" Barrel
    5.0 (23 Reviews)
    $699.99
    Available
  3. DoubleStar Hunter AR-15 A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel 5/8"-24 Threaded Muzzle with Thread Protector
    Sale
    $449.99
    Save $50.00 (10%)
    Available
  4. Alexander Arms AR-15 AWS A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    5.0 (6 Reviews)
    $1,139.99
    Available
  5. DPMS AR-15 A2 Upper Receiver Assembly 5.56x45mm NATO 20" Barrel A2 Handguard
    4.8 (16 Reviews)
    $479.99
    Available
  6. Bushmaster AR-15 Patrolman M4 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.8 (36 Reviews)
    Sale
    $399.99
    Save $75.00 (16%)
    Available
  7. Bushmaster AR-15 Varminter A3 Upper Receiver Assembly 5.56x45mm NATO 24" Barrel
    5.0 (10 Reviews)
    $549.99
    Available
  8. Adams Arms AR-15 Base MOE A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.4 (28 Reviews)
    $579.99
    Available
  9. 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
  10. Alexander Arms AR-15 Overwatch A3 Upper Receiver Assembly 6.5 Grendel 24" Barrel
    4.5 (30 Reviews)
    Sale
    $717.99
    Save $132.00 (16%)
    Available
  11. Alexander Arms AR-15 Entry A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    4.6 (44 Reviews)
    Clearance15 at this price
    $692.09
    Save $66.90 (9%)
    Available
  12. Bushmaster XM15 AR-15 A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    Clearance
    $651.14
    Save $88.85 (12%)
    Available
  13. Colt AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Flip Up Rear Sight
    5.0 (3 Reviews)
    $627.00
    Available
  14. Alexander Arms AR-15 Precision A3 Upper Receiver Assembly 50 Beowulf 16.5" Barrel
    $979.99
    Available
  15. Colt AR-15 SOCOM A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.0 (4 Reviews)
    $727.00
    Available
  16. Bushmaster XM15 AR-15 A3 Upper Receiver Assembly 5.56x45mm NATO 16" Barrel
    4.9 (16 Reviews)
  17. Advanced Armament Co (AAC) AR-15 A3 Upper Receiver Assembly 300 AAC Blackout 16" Barrel
    4.6 (14 Reviews)
    $949.99
    Available
  18. Olympic Arms AR-15 A3 Upper Receiver Assembly 7.62x39mm 16" Barrel
    4.7 (27 Reviews)
    $575.99
    Available
  19. Adams Arms AR-15 Pistol PDW Base A3 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 7.5" Barrel
    4.6 (9 Reviews)
    $735.00
    Available
  20. Colt AR-15 Pistol Upper Receiver Assembly 5.56x45mm NATO 14.5" Barrel Flip Up Rear Sight
    $627.00
    Available
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