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Complete Upper Receivers

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  9. Quarter Circle 10 Complete AR-15 9mm PCC Upper - 5.5"
    Quarter Circle 10 Complete AR-15 9mm PCC Upper - 5.5"
    Special Price $648.99 Regular Price $864.95
    Starting at 0% APR or $32.40/mo with . Learn More
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Barrel Length
  1. 4" 1 item
  2. 5" 2 items
  3. 5.5" 10 items
  4. 6" 1 item
  5. 7.5" 2 items
  6. 7.75" 1 item
  7. 7.94" 1 item
  8. 8" 3 items
  9. 8.3" 2 items
  10. 8.5" 5 items
  11. 9.5" 1 item
  12. 9.75" 1 item
  13. 10.3" 14 items
  14. 10.5" 6 items
  15. 11.5" 4 items
  16. 11.85" 2 items
  17. 12.5" 1 item
  18. 13" 2 items
  19. 13.7" 2 items
  20. 14.5" 8 items
  21. 16" 13 items
  22. 16.1" 1 item
  23. 16.25" 1 item
  24. 18" 3 items
Barrel Profile
  1. Non-fluted 1 item
Caliber
  1. .22 ARC 1 item
  2. .223/5.56 1 item
  3. .223 Wylde 4 items
  4. .45 ACP 1 item
  5. 300 Blackout 16 items
  6. 5.56X45 2 items
  7. 5.56 NATO 36 items
  8. 6mm ARC 1 item
  9. 7.62x39 6 items
  10. 9mm 15 items
Color
Configuration
  1. Mil-Spec 1 item
Finish
  1. Arid 2 items
  2. Cerakote 5 items
  3. Anodize 5 items
Gas Block Diameter
  1. .750" 19 items
Gas System
  1. Blowback 1 item
  2. Pistol 6 items
  3. Carbine 11 items
  4. Mid 16 items
  5. Rifle 2 items
Manufacturer
  1. Aero Precision 1 item
  2. Angstadt Arms 1 item
  3. Bravo Company MFG (BCM) 3 items
  4. Daniel Defense 10 items
  5. Dead Foot Arms LLC 2 items
  6. Faxon Firearms 2 items
  7. Fightlite Industries 1 item
  8. Geissele 3 items
  9. Matador Arms 2 items
  10. Maxim Defense 17 items
  11. Next Level Armament 1 item
  12. Noveske 10 items
  13. Primary Weapon Systems 9 items
  14. Q, LLC 2 items
  15. Quarter Circle 10 3 items
  16. R&D Precision 3 items
  17. Radian Weapons 2 items
  18. Rainier Arms, LLC 5 items
  19. Rise Armament 1 item
  20. Sig Sauer 4 items
  21. Sionics Weapon Systems 2 items
  22. Sons of Liberty Gun Works 1 item
  23. Stern Defense 3 items
  24. VKTR Industries 1 item
Model
  1. Sig MCX 2 items
Mount
  1. M-LOK 25 items
  2. Picatinny 3 items
Option
  1. AR-10 1 item
  2. AR-15 5 items
  3. MCS 2 items
  4. Full Size 2 items
Platform
  1. AR-9 1 item
  2. AR-10/LR308 1 item
  3. AR-15 22 items
  4. Sig Sauer 3 items
Price
  1. $0.00 - $999.99 26 items
  2. $1,000.00 - $1,999.99 56 items
  3. $2,000.00 - $2,999.99 5 items
  4. $4,000.00 and above 2 items
Product Type
  1. AR-10 Complete Upper Receiver 1 item
  2. AR-15 Complete Upper Receiver 61 items
  3. AR-15 Upper Receiver Group 1 item
  4. AR-9 Upper Receiver 7 items
  5. Complete Upper 18 items
  6. Suppressor 1 item
Rail Length
  1. 6.0" 2 items
  2. 6.91" 1 item
  3. 7" 3 items
  4. 8" 1 item
  5. 8.5" 1 item
  6. 9.3" 1 item
  7. 9.5" 4 items
  8. 9.75" 4 items
  9. 10.5" 2 items
  10. 10.75" 1 item
  11. 11" 1 item
  12. 11.5" 1 item
  13. 12" 2 items
  14. 12.5" 2 items
  15. 13.5" 2 items
  16. 15" 7 items
  17. 15.25" 1 item
  18. 16" 1 item
Thread Pitch
  1. 1/2x28 (9mm) 4 items
  2. 1/2x28 (.22 cal) 22 items
  3. 1/2x36 1 item
  4. 5/8x24 (.30 cal) 9 items
Threaded
  1. Yes 13 items
Twist Rate
  1. 1:6 1 item
  2. 1:7 27 items
  3. 1:8 2 items
  4. 1:10 3 items
Stock Status
  1. In stock 37 items
  2. Out of stock 52 items
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