Father's Day Appreciation - 12% OFF Sitewide

*Some Exclusions Apply, EXCLUDES DEALERS & DISTRIBUTORS,  DISCOUNTS DO NOT STACK WITH OTHER SALES, DISCOUNT APPLIED AT CHECKOUT (SALE GOOD FROM 6/11-6/16) EXCLUDES: ATLAS, KUSTOMWORX, LAUGO ARMS, LMT, NIGHTHAWK, STACCATO, TTI PIT VIPER

You must be 18 to view and use this website

Pursue Your Passion

Rainier Arms on Instagram Tuebor Coin

Menu
Account

Complete Upper Receivers

View as Grid List

Items 1-16 of 96

Page
per page
  8. 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
    Add to Wish List Add to Compare
View as Grid List

Items 1-16 of 96

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" 7 items
  15. 11" 1 item
  16. 11.5" 5 items
  17. 11.85" 2 items
  18. 12.5" 2 items
  19. 13" 2 items
  20. 13.7" 2 items
  21. 13.9" 1 item
  22. 14.5" 9 items
  23. 16" 13 items
  24. 16.1" 1 item
  25. 16.25" 1 item
  26. 16.5" 1 item
  27. 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 43 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 10 items
Gas Block Diameter
  1. .750" 24 items
Gas System
  1. Blowback 1 item
  2. Pistol 6 items
  3. Carbine 13 items
  4. Mid 19 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. Heckler & Koch 2 items
  10. Matador Arms 2 items
  11. Maxim Defense 17 items
  12. Next Level Armament 1 item
  13. Noveske 10 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. Riflespeed 5 items
  21. Rise Armament 1 item
  22. Sig Sauer 4 items
  23. Sionics Weapon Systems 2 items
  24. Sons of Liberty Gun Works 1 item
  25. Stern Defense 3 items
  26. VKTR Industries 1 item
Model
  1. Sig MCX 2 items
Mount
  1. M-LOK 26 items
  2. Picatinny 4 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 28 items
  4. Sig Sauer 3 items
Price
  1. $0.00 - $999.99 31 items
  2. $1,000.00 - $1,999.99 56 items
  3. $2,000.00 - $2,999.99 7 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 68 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" 5 items
  8. 9.75" 4 items
  9. 10" 1 item
  10. 10.5" 2 items
  11. 10.7" 1 item
  12. 10.75" 1 item
  13. 11" 1 item
  14. 11.5" 1 item
  15. 12" 2 items
  16. 12.5" 2 items
  17. 12.55" 1 item
  18. 13" 1 item
  19. 13.5" 2 items
  20. 15" 7 items
  21. 15.25" 1 item
  22. 16" 1 item
Thread Pitch
  1. 1/2x28 (9mm) 4 items
  2. 1/2x28 (.22 cal) 27 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 28 items
  3. 1:8 6 items
  4. 1:10 3 items
Stock Status
  1. In stock 42 items
  2. Out of stock 54 items
My Wish List
Last Added Items
  1. Add to Cart
    Remove This Item
Go to Wish List
You have no items in your wish list.
Google Customer Reviews Google Customer Reviews