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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.

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Barrel Length
  1. 8" 1 item
  2. 11.5" 1 item
Caliber
  1. .30 Cal 1 item
  2. 300 Blackout 1 item
  3. 5.56 NATO 2 items
Category
  1. Receiver Parts 12 items
  2. Parts & Kits 5 items
  3. Buffer Systems 2 items
  4. Trigger Parts 1 item
  5. Grips 6 items
  6. Charging Handles 2 items
  7. Rifle Handguards 10 items
  8. Stocks & Braces 5 items
Color
Configuration
  1. Right Hand 1 item
Gas Block Diameter
  1. .750" 1 item
Gas System Length
  1. Pistol 1 item
Inside Diameter
  1. 1.3" 1 item
  2. 1.34" 2 items
  3. 1.39" 1 item
Manufacturer
  1. A3 Tactical 2 items
  2. Aero Precision 1 item
  3. Agency Arms 1 item
  4. Ballistic Advantage 1 item
  5. Centurion Arms 1 item
  6. Daniel Defense 1 item
  7. Faxon Firearms 1 item
  8. Fortis MFG 13 items
  9. Forward Controls Design 1 item
  10. Geissele 2 items
  11. Grey Birch MFG 2 items
  12. Icon Defense 2 items
  13. JK Armament 1 item
  14. JMAC Customs 4 items
  15. JP Enterprises Inc 1 item
  16. Midwest Industries 2 items
  17. Rainier Arms, LLC 2 items
  18. Rise Armament 1 item
  19. Samson Manufacturing Corp. 1 item
  20. Sharps Bros 2 items
  21. Stern Defense 1 item
Model
  1. Sig MCX 1 item
Mount
  1. M-LOK 9 items
  2. Picatinny 1 item
Option
  1. AR-10 1 item
  2. AR-15 8 items
  3. B&T APC 1 item
Platform
  1. 10-22 1 item
  2. AR-10/LR308 1 item
  3. AR-15 3 items
  4. AK47/74 1 item
  5. CZ 1 item
  6. Sig Sauer 1 item
Product Type
  1. 10/22 Receiver 1 item
  2. AR-10 Receiver Set 1 item
  3. AR-10 Stripped Lower Receiver 1 item
  4. AR-15 Charging Handle 1 item
  5. AR-15 Complete Lower Receiver 1 item
  6. AR-15 Complete Upper Receiver 2 items
  7. AR-15 Handguard 5 items
  8. AR-15 Stripped Lower Receiver 1 item
  9. AR-15 Stripped Upper Receiver 3 items
  10. Brace 1 item
  11. Buffer Tube 2 items
  12. Cable Clip 1 item
  13. Charging Handle 1 item
  14. Chassis 2 items
  15. Dust Cover 1 item
  16. End Cap 1 item
  17. Forearm Accesory 1 item
  18. Handguard 4 items
  19. Lower Parts Kit 1 item
  20. Magazine Release 1 item
  21. Pistol Grip 5 items
  22. Safety Selector 1 item
  23. Stock Accessory 1 item
  24. Stock Adapter 3 items
  25. Trigger 1 item
  26. Vertical Grip 1 item
Rail Length
  1. 6.25" 2 items
  2. 6.7" 3 items
  3. 7" 1 item
  4. 8" 1 item
  5. 9.5" 1 item
  6. 9.6" 3 items
  7. 10" 4 items
  8. 10.5" 2 items
  9. 11.8" 3 items
  10. 12.4" 1 item
  11. 12.5" 2 items
  12. 13" 2 items
  13. 13.5" 1 item
  14. 13.8" 3 items
  15. 15" 2 items
  16. 15.3" 3 items
Twist Rate
  1. 1:7 1 item
Stock Status
  1. In stock 43 items Remove This Item
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