ATTENTION: USPS is currently experiencing significantly longer transit times than normal for packages. If your order is time sensitive please choose an Express shipping option at checkout.

You must be 18 to view and use this website

Pursue Your Passion

Rainier Arms on Instagram Tuebor Coin

Complete Upper Receivers

View as Grid List

Items 17-32 of 89

Page
per page
  2. Maxim Defense MDX 505 PDX Mil-Spec Complete Upper - 5.5" Black
    Maxim Defense MDX 505 PDX Mil-Spec Complete Upper - 5.5" Black
    $1,165.50 - $1,165.50
    Add to Wish List Add to Compare
View as Grid List

Items 17-32 of 89

Page
per page
Shop By
Shopping Options
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. 13.9" 1 item
  21. 14.5" 9 items
  22. 16" 12 items
  23. 16.1" 1 item
  24. 16.25" 1 item
  25. 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 5 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 14 items
Color
Configuration
  1. Mil-Spec 1 item
Finish
  1. Arid 2 items
  2. Cerakote 5 items
  3. Anodize 4 items
Gas Block Diameter
  1. .750" 20 items
Gas System Length
  1. Pistol 6 items
  2. Carbine 10 items
  3. Mid 18 items
  4. Rifle 2 items
Manufacturer
  1. Aero Precision 1 item
  2. Angstadt Arms 1 item
  3. Blackout Defense 1 item
  4. Bravo Company MFG (BCM) 3 items
  5. Daniel Defense 10 items
  6. Dead Foot Arms LLC 2 items
  7. Faxon Firearms 2 items
  8. Fightlite Industries 1 item
  9. Geissele 2 items
  10. Matador Arms 1 item
  11. Maxim Defense 17 items
  12. Next Level Armament 1 item
  13. Noveske 11 items
  14. Primary Weapon Systems 9 items
  15. Q, LLC 2 items
  16. Quarter Circle 10 3 items
  17. R&D Precision 3 items
  18. Radian Weapons 2 items
  19. Rainier Arms, LLC 5 items
  20. Rise Armament 1 item
  21. Sig Sauer 4 items
  22. Sionics Weapon Systems 2 items
  23. Sons of Liberty Gun Works 1 item
  24. Stern Defense 3 items
  25. 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-10/LR308 1 item
  2. AR-15 22 items
  3. 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 62 items
  3. AR-15 Upper Receiver Group 1 item
  4. AR-9 Upper Receiver 6 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" 1 item
  10. 10.75" 2 items
  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) 3 items
  2. 1/2x28 (.22 cal) 23 items
  3. 1/2x36 1 item
  4. 5/8x24 (.30 cal) 9 items
Threaded
  1. Yes 14 items
Twist Rate
  1. 1:6 1 item
  2. 1:7 27 items
  3. 1:8 3 items
  4. 1:10 2 items
Stock Status
  1. In stock 34 items
  2. Out of stock 55 items
My Wish List
Last Added Items
You have no items in your wish list.
Google Customer Reviews Google Customer Reviews