To See Our Holiday 2024 Schedule, Please Visit Our Contact Page.

Pursue Your Passion
My Cart

Rainier Arms on Instagram

Menu
Account

Rifle Parts

Whether you're building a new rifle from scratch or looking to upgrade an existing firearm, our vast selection of rifle parts has everything you are going to need in that journey. At Rainier Arms' selection of rifle parts, you can find a wide variety of products including lower and upper parts, trigger parts, muzzle devices, and many more. 

Explore our selection of high-quality parts coming from various leading manufacturers like Strike Industries, Magpul, BCM, and many more.

Also, don't forget to check our specially-made Rainier Arms barrels for your firearms.

We can't find products matching the selection.
Shop By
Now Shopping by
  1. Price $170.00 - $179.99 Remove This Item
Clear All
Shopping Options
Barrel Length
  1. 9" 1 item
  2. 16" 3 items
  3. 18" 1 item
Barrel Profile
  1. Lightweight 1 item
Caliber
  1. 300 Blackout 1 item
  2. 5.56 NATO 4 items
  3. 7.62x39 3 items
Category
  1. Receiver Parts 4 items
  2. Barrels 5 items
  3. Buffer Systems 1 item
  4. Trigger Parts 3 items
  5. Muzzle Devices 7 items
  6. Bolt Parts 2 items
  7. Charging Handles 1 item
  8. Rifle Handguards 4 items
  9. Stocks & Braces 5 items
Color
Configuration
  1. Gen 3 1 item
Finish
  1. Nitride 4 items
  2. Phosphate 2 items
  3. Anodize 3 items
Gas Block Diameter
  1. .625" 3 items
  2. .750" 2 items
Gas System Length
  1. Pistol 1 item
  2. Mid 3 items
  3. Rifle 1 item
Inside Diameter
  1. 1.3" 1 item
  2. 1.34" 1 item
Manufacturer
  1. A3 Tactical 2 items
  2. Aero Precision 1 item
  3. Ballistic Advantage 1 item
  4. Bravo Company MFG (BCM) 1 item
  5. Dead Foot Arms LLC 1 item
  6. Faxon Firearms 6 items
  7. Fortis MFG 2 items
  8. Geissele 1 item
  9. Hiperfire 1 item
  10. JMAC Customs 3 items
  11. Knight’s Armament Company (KAC) 2 items
  12. Lantac 1 item
  13. Maxim Defense 2 items
  14. Midwest Industries 1 item
  15. Precision Armament 1 item
  16. Rex Silentium 1 item
  17. Rise Armament 1 item
  18. Sons of Liberty Gun Works 1 item
  19. Strike Industries 1 item
  20. V Seven Weapon Systems 1 item
  21. VLTOR 1 item
Mount
  1. M-LOK 3 items
  2. Picatinny 1 item
Option
  1. AR-10 1 item
  2. AR-15 6 items
Platform
  1. 10-22 1 item
  2. AR-9 1 item
  3. AR-15 7 items
Product Type
  1. 10/22 Receiver 1 item
  2. AR-10 Stripped Lower Receiver 1 item
  3. AR-15 Barrel 5 items
  4. AR-15 Charging Handle 1 item
  5. AR-15 Handguard 3 items
  6. AR-15 Stripped Upper Receiver 2 items
  7. Bolt Carrier Group 1 item
  8. Brace 2 items
  9. Buffer 1 item
  10. Flash Hider 3 items
  11. Handguard 1 item
  12. Muzzle Brake 3 items
  13. Muzzle Device Accessory 1 item
  14. Parts Kit 1 item
  15. Stock 3 items
  16. Trigger 3 items
Rail Length
  1. 6.7" 2 items
  2. 7" 1 item
  3. 8.5" 1 item
  4. 9" 1 item
  5. 9.6" 2 items
  6. 10.3" 1 item
  7. 12" 1 item
  8. 12.4" 2 items
  9. 13.8" 2 items
  10. 15" 1 item
  11. 15.3" 2 items
Thread Pitch
  1. 1/2x28 (.22 cal) 7 items
  2. 1/2x36 1 item
  3. 5/8x24 (.30 cal) 5 items
  4. M14x1 LH 1 item
Twist Rate
  1. 1:8 5 items
Stock Status
  1. In stock 32 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