Pursue Your Passion
My Cart

Rainier Arms on Instagram

Menu
Account
raineirarms

Receiver Parts

View as Grid List

Items 1-16 of 22

Page
per page
  3. Sig Sauer MCX Spear - LT 7.62X39 Complete Upper 11.5"
    Sig Sauer MCX Spear - LT 7.62X39 Complete Upper 11.5"
    $1,999.99
    Out of stock
    Add to Wish List Add to Compare
  9. SIG SAUER MCX Rattler 5.56 NATO Complete Upper - 5.5"
    SIG SAUER MCX Rattler 5.56 NATO Complete Upper - 5.5"
    Special Price $1,824.99 Regular Price $1,999.99
    Out of stock
    Add to Wish List Add to Compare
  10. Daniel Defense MK18 RIII Complete Upper Receiver - 10.3" FDE
    Daniel Defense MK18 RIII Complete Upper Receiver - 10.3" FDE
    $1,412.00
    Out of stock
    Add to Wish List Add to Compare
  11. SIG SAUER MCX Rattler 300BLK Complete Upper - 5.5"
    SIG SAUER MCX Rattler 300BLK Complete Upper - 5.5"
    Special Price $1,759.99 Regular Price $1,999.99
    Out of stock
    Add to Wish List Add to Compare
  14. Rainier Arms MK12 223 Wylde Partial Upper Receiver - 18"
    Rainier Arms MK12 223 Wylde Partial Upper Receiver - 18"
    $1,050.00
    Out of stock
    Add to Wish List Add to Compare
View as Grid List

Items 1-16 of 22

Page
per page
Shop By
Now Shopping by
  1. Price $1,000.00 - $1,999.99 Remove This Item
Clear All
Shopping Options
Barrel Length
  1. 5.5" 5 items
  2. 7.94" 1 item
  3. 8.5" 2 items
  4. 9.5" 1 item
  5. 9.75" 1 item
  6. 10.3" 2 items
  7. 10.5" 2 items
  8. 11.5" 1 item
  9. 11.85" 1 item
  10. 13" 1 item
  11. 13.7" 1 item
  12. 16" 3 items
  13. 18" 2 items
Barrel Profile
  1. MK12 SPR 1 item
Caliber
  1. .223/5.56 1 item
  2. .223 Wylde 1 item
  3. 300 Blackout 7 items
  4. 5.56 NATO 9 items
  5. 7.62x39 2 items
Category
  1. Complete Upper Receivers 20 items
  2. Partial Upper Receivers 2 items
Color
Finish
  1. Arid 1 item
  2. Anodize 2 items
Gas Block Diameter
  1. .750" 7 items
Gas System Length
  1. Pistol 2 items
  2. Carbine 2 items
  3. Mid 2 items
Manufacturer
  1. Daniel Defense 1 item
  2. Lewis Machine & Tool (LMT) 1 item
  3. Maxim Defense 5 items
  4. Noveske 4 items
  5. Primary Weapon Systems 3 items
  6. Q, LLC 1 item
  7. Rainier Arms, LLC 3 items
  8. Sig Sauer 3 items
  9. VKTR Industries 1 item
Model
  1. Sig MCX 2 items
Mount
  1. M-LOK 8 items
  2. Picatinny 2 items
Option
  1. AR-15 1 item
Platform
  1. AR-10/LR308 1 item
  2. AR-15 3 items
  3. Sig Sauer 2 items
Price
  1. $1,000.00 - $1,099.99 2 items
  2. $1,100.00 - $1,199.99 5 items
  3. $1,200.00 - $1,299.99 6 items
  4. $1,400.00 - $1,499.99 3 items
  5. $1,500.00 - $1,599.99 2 items
  6. $1,700.00 - $1,799.99 2 items
  7. $1,800.00 - $1,899.99 1 item
  8. $1,900.00 and above 1 item
Product Type
  1. AR-10 Partial Upper Receiver 1 item
  2. AR-15 Complete Upper Receiver 17 items
  3. AR-15 Partial Upper Receiver 1 item
  4. Complete Upper 3 items
Rail Length
  1. 6.91" 1 item
  2. 7" 2 items
  3. 9.5" 1 item
  4. 9.75" 1 item
  5. 12.5" 1 item
  6. 12.75" 1 item
  7. 15" 3 items
Thread Pitch
  1. 1/2x28 (.22 cal) 6 items
  2. 5/8x24 (.30 cal) 3 items
Threaded
  1. Yes 3 items
Twist Rate
  1. 1:6 1 item
  2. 1:7 5 items
Stock Status
  1. Out of stock 22 items Remove This Item
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