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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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  1. Price $80.00 - $89.99 Remove This Item
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Barrel Length
  1. 7" 1 item
Caliber
  1. .22 Cal 1 item
  2. .223/5.56 2 items
  3. .30 Cal 2 items
  4. .308 2 items
  5. 5.56 NATO 1 item
  6. 5.56mm 2 items
  7. 9mm 3 items
Category
  1. Receiver Parts 1 item
  2. Parts & Kits 12 items
  3. Trigger Parts 3 items
  4. Gas Systems 5 items
  5. Muzzle Devices 22 items
  6. Grips 12 items
  7. Charging Handles 5 items
  8. Stocks & Braces 7 items
Color
Configuration
  1. 90 Degree 1 item
  2. .625 DIA 1 item
  3. .800 DIA 1 item
  4. .936 DIA 1 item
Finish
  1. Black 2 items
  2. Nickel Boron 1 item
  3. Anodize 4 items
Gas Block Diameter
  1. .625" 4 items
  2. .750" 4 items
  3. .875" 4 items
  4. .936" 4 items
Gas System Length
  1. Pistol 1 item
Manufacturer
  1. A3 Tactical 5 items
  2. Aero Precision 1 item
  3. ALG Defense 1 item
  4. Arms Republic 1 item
  5. B5 Systems 1 item
  6. Bravo Company MFG (BCM) 5 items
  7. Centurion Arms 1 item
  8. Daniel Defense 1 item
  9. Dead Air Armament 4 items
  10. Fortis MFG 3 items
  11. Forward Controls Design 6 items
  12. Geissele 1 item
  13. Grey Ghost Precision 1 item
  14. Griffin Armament 1 item
  15. JK Armament 3 items
  16. JL Billet 1 item
  17. JMAC Customs 3 items
  18. Knight’s Armament Company (KAC) 1 item
  19. Magpul Industries 2 items
  20. NEMO Arms 1 item
  21. Noveske 2 items
  22. Primary Weapon Systems 6 items
  23. Rainier Arms, LLC 3 items
  24. Rainier Industries 2 items
  25. Sons of Liberty Gun Works 1 item
  26. Superlative Arms 4 items
  27. Tyrant Designs 1 item
  28. V Seven Weapon Systems 1 item
  29. VLTOR 1 item
  30. WMD Guns 2 items
Mount
  1. M-LOK 7 items
  2. Picatinny 2 items
Option
  1. AR-15 4 items
  2. CZ 1 item
  3. Heckler & Koch 1 item
  4. Small Lever 1 item
  5. Adjustable 5 items
Platform
  1. AR-10/LR308 1 item
  2. AR-15 5 items
  3. H&K 1 item
Product Type
  1. Angled Grip 2 items
  2. AR-10 / LR 308 Charging Handle 1 item
  3. AR-15 Charging Handle 3 items
  4. AR-15 Stripped Lower Receiver 1 item
  5. Blast Shield 1 item
  6. Charging Handle 2 items
  7. Compensator 12 items
  8. End Cap 3 items
  9. Flash Hider 7 items
  10. Gas Block 5 items
  11. Lower Parts Kit 2 items
  12. Magazine Release 1 item
  13. Muzzle Brake 2 items
  14. Pistol Grip 4 items
  15. Safety Selector 6 items
  16. Stock 5 items
  17. Stock Adapter 2 items
  18. Trigger 3 items
  19. Vertical Grip 7 items
Rail Length
  1. 12.6" 1 item
Size
  1. Medium 1 item
  2. Large 1 item
  3. 5 Slot 1 item
Thread Pitch
  1. 1/2x28 (9mm) 1 item
  2. 1/2x28 (.22 cal) 14 items
  3. 5/8x24 (.30 cal) 8 items
  4. M13.5x1 LH 1 item
Threaded
  1. Yes 6 items
Stock Status
  1. In stock 67 items Remove This Item
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