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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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  12. Magpul Hunter X-22 Stock Ruger 10/22 (M-LOK)
    Magpul Hunter X-22 Stock Ruger 10/22 (M-LOK)
    $137.70
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  14. Fortis MFG Muzzle Brake 5.56
    Fortis MFG Muzzle Brake 5.56
    $75.95
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  15. Magpul MOE SL Carbine Stock Mil-Spec
    Magpul MOE SL Carbine Stock Mil-Spec
    $61.70
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  1. Caliber 5.56 NATO Remove This Item
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Barrel Length
  1. 5.5" 3 items
  2. 6.75" 1 item
  3. 7" 1 item
  4. 7.5" 1 item
  5. 8" 1 item
  6. 10.3" 10 items
  7. 10.5" 14 items
  8. 11.5" 8 items
  9. 12.3" 1 item
  10. 12.5" 8 items
  11. 13" 1 item
  12. 13.7" 6 items
  13. 13.9" 4 items
  14. 14.5" 14 items
  15. 16" 23 items
  16. 16" Dissipator 1 item
  17. 16.1" 1 item
  18. 16.3" 1 item
  19. 18" 2 items
  20. 20" 1 item
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  1. Half-Fluted 1 item
  2. Non-fluted 4 items
Category
  1. Receiver Parts 35 items
  2. Parts & Kits 2 items
  3. Barrels 5 items
  4. Rifle Barrels 27 items
  5. Muzzle Devices 12 items
  6. Bolt Parts 1 item
  7. Charging Handles 1 item
  8. Stocks & Braces 1 item
  9. MILSPEC Parts 1 item
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  1. M-LOK 1 item
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Gas Block Diameter
  1. .625" 3 items
  2. .750" 33 items
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  1. Pistol 3 items
  2. Carbine 23 items
  3. Mid 27 items
  4. Rifle 3 items
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Inside Diameter
  1. 1.3" 1 item
Is Firearms?
  1. No 80 items
Manufacturer
  1. Aero Precision 1 item
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  6. Daniel Defense 4 items
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  10. Fortis MFG 1 item
  11. Geissele 1 item
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  13. Icon Defense 1 item
  14. JMAC Customs 2 items
  15. Magpul Industries 2 items
  16. Maxim Defense 7 items
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  19. Q, LLC 1 item
  20. Rainier Arms, LLC 11 items
  21. Sharps Bros 1 item
  22. Sig Sauer 1 item
  23. Silencerco 3 items
  24. Sons of Liberty Gun Works 10 items
  25. Spinta Precision 1 item
  26. Tactical Edge Arms 1 item
  27. VKTR Industries 2 items
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  1. Sig MCX 1 item
Mount
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  2. M-LOK 11 items
  3. Picatinny 2 items
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  1. AR-10 1 item
  2. AR-15 6 items
  3. Non-Adjustable 1 item
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  1. AR-15 20 items
  2. Sig Sauer 1 item
Price
  1. $0.00 - $999.99 67 items
  2. $1,000.00 - $1,999.99 10 items
  3. $2,000.00 and above 3 items
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  1. AR-15 Barrel 2 items
  2. AR-15 Charging Handle 1 item
  3. AR-15 Complete Upper Receiver 13 items
  4. AR-15 Partial Upper Receiver 14 items
  5. AR-15 Handguard 1 item
  6. AR-15 Upper Receiver Group 1 item
  7. Barrel 27 items
  8. Bolt Carrier Group 1 item
  9. Charging Handle 1 item
  10. Chassis 1 item
  11. Compensator 1 item
  12. Complete Upper 5 items
  13. Flash Hider 6 items
  14. Muzzle Brake 5 items
  15. Parts Kit 2 items
  16. Stock 1 item
Rail Length
  1. 9" 1 item
  2. 9.2" 1 item
  3. 9.5" 3 items
  4. 9.55" 2 items
  5. 10" 1 item
  6. 10.5" 1 item
  7. 10.7" 1 item
  8. 11" 1 item
  9. 11.7" 2 items
  10. 12.5" 2 items
  11. 12.6" 1 item
  12. 13" 1 item
  13. 13.7" 2 items
  14. 15" 7 items
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  1. 1/2x28 56 items
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  2. No 1 item
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  1. 1:7 33 items
  2. 1:8 6 items
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  1. In stock 80 items Remove This Item
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